Uppers Gun Parts

(3,495 deals total)

Anderson complete upper with 10" quad rail with BCG and charging included $379.99 comes with $10/off with code FACEBOOK10. Free shipping

GREAT DEAL ON 80% ERS AND UPPERS FOR ONLY $99 SHIPPED. new 80% lower receivers in stock and all anodized in colors : $59 for the lower and we also have the matching uppers that will be on sale this week and updated on the website by sunday : $99 for the upper and 80% lower in anodized colors : http://ljsarparts.com/PURPLE-anodized-80-lower-receiver-AR1…

Finish your budget build off with a quality US made upper. Built on a MILSPEC Upper Receiver •16 Inch Wylde Barrel 1:9 Twist •A2 Muzzle Device •A2 front sight post •M16 Bolt Carrier Group and Charging Handle. •Forward Assist •Dust Cover •Upper Receiver is Anodized 100% US Made ​5.56 Nato and .223 remington is safe to use. Blemished uppers are structurally sound and may contain imperfections in finish. Brand: HD Defense Product Code: 16-Complete-A2

The best fun gun ever? http://www.gunsamerica.com/blog/best-fun-gun-ever-the-can-cannon/ The Can Cannon is a patent pending launching device for soda cans and other heavy, thin walled objects. A proprietary gas ported barrel and pressure tube reduce the exposure to high pressure gasses which could destroy relatively delicate projectiles. The Can Cannon is currently configured for launching full, un-opened 12oz soda cans. When used with standard mil spec blanks and fired at an optimum angle it can reach an average distance of 105 yards!

Ares Armor Slick Side DPMS ar10 upper. $75.00 - 67% off Billet AR10 DPMS Slick Side Upper LR308 Extra High Railed Upper For those that want the simple strait forward design of a slick side upper for their AR10 DPMS rifle, we bring you our new extra high rail slick side upper. Perfect for those dedicated long range rifles, the extra high rail provides a solid scope mounting option provides plenty of clearance for proper weapon manipulation without the risk of hitting your optic. DPMS LR308 pattern upper. MAXIMIZE YOUR SAVINGS.

Side Charging AR-15 Stripped Billet Upper Receiver. This stripped side charging upper does not include the lower receiver or the BCG as depicted in the demonstration photos. Manufacturer: New Frontier Armory Model: Side Charger — Non Reciprocating — Stripped Type: Non Reciprocating Side Charging AR-15 Stripped Billet Upper Receiver Caliber: Multi (will accept any upper and/or caliber designed for the AR-15 platform) Magazine: Accepts any standard MIL-SPEC AR-15 magazine Weight: 13.3 oz Other Specifications and Features of the Side Charging AR-15 Stripped Billet Upper Receiver:

SAA Branded Made by Aero Precision AR-15 Assembled Flat Top, T-Marked Upper Receiver. Made by Aero Precision Advanced aerospace manufacturing technology and a highly skilled staff are utilized to produce the industries finest, forged Mil-Spec lowers. Aero Precision receivers are machined on a multimillion dollar, automated, cellular manufacturing system which enables us to produce a product of unequaled quality and value. Manufactured by Aero Precision Forged using 7075 T6 aircraft-grade aluminum Mil-spec A3 flat top upper M4 feed ramp cuts

Upper receiver for ar15. 7075-T6 Aluminum receiver M4 Feed Ramps Dust Cover, Forward Assist 10" Free float quad rail. .223 Wylde chamber (shoots 5.56 or .223) 16" m4 barrel, 1:8 twist a2 flash hider Item #: 16upper10

7.5" Stainless Steel Barrel 1:7 twist. m4 feedramps. 223 Wylde Chamber (shoots both 5.56 and 223) Dust cover, Forward Assist, A2 Flash Hider 7" Free Float Quad Rail Item #: 7.5upper

Model: BRB5567SSFF7 Upper: Flat top m-4 upper w/ ext feed ramps, 7075-T6 aluminum, hard coat anodized black type III class II finish w/ engraved t-markings Caliber: 5.56 Barrel: 7" 1/9 Twist, Chrome Moly Steel , M-4 feed ramps, Pistol Length Gas System, 1/2x28 threaded Flash Hider Option: A2 Bird Cage, Troy Medieval Flash Suppressor, or Smith Enterprise Vortex Flash Hider Front Site: Low profile gas block w/ rail. Handguard: UTG Pro 7" Super Slim Free Float Quad Rail. (includes 3 2-slot rail sections) Barrel Finish: Mag Phosphate Item Id: BRB5567SSFF7NL

.308 Upper Receiver Slick side receiver will not work with A3 style four rail free float tube. FOR GEN 1 RIFLES ONLY Part Number 308-UR-36

ARD AMERICAN RIFLE COMPLETE UPPER 16 INCH .458 SO-COM LOG ON NOW TO AR15DEPOT.COM COMPLETE UPPER $895.00 FREE SHIPPING

BRB 5.56 10.5" Pistol/SBR Upper Assembly, Super Slim FF Rail Specifications Model: BRB55610SSFF9nb Upper: Flat top m-4 upper w/ ext feed ramps, 7075-T6 aluminum, hard coat anodized black type III class II finish w/ laser etched t-markings Caliber: 5.56 Barrel: 10.5" 1/7 Twist, Chrome Moly Steel , M-4 feed ramps, Pistol Length Gas System, 1/2x28 threaded Flash Hider Option: A2 Bird Cage (standard). Troy Medieval Flash Suppressor or Smith Enterprise Vortex Flash Hider are optional. Handguard: UTG Pro 9" Super Slim Free Float Quad Rail. (includes 3 2-slot rail sections)

The PWS MK107 Upper was developed specifically for CQB requirements and as a replacement option for the MP5 style weapons. The short compact design retains lethal capability out to 200 meters and has been proven highly effective in the military and law enforcement community. Designed from the ground up to be 7" barreled Upper, the PWS MK107 is a dream come true for those looking for the shortest possible package with reliability of a full size Upper.

(Free Shipping on all Orders) Upper Assembly Forged 7075-T6 Flat Top Receiver with M4 Feed Ramps Laser etched T-marks and Anodized Finish Manganese Phosphated Chrome Moly Vanadium 300 Blackout Barrel 10.5” HBAR barrel with M4 Barrel Extension 1:8 Barrel Twist .750 Barrel Diameter at Gas Block Pistol Length Gas Nitrided low vis gas block (Secured firmly with Barrel Dimpling) 5/8-24 Muzzle Thread Pitch A2 Flash Hider Mil-spec BCG and Charging Handle (Select from drop-down menu above) (Phosphated Chrome-lined w/properly staked gas key) Quad Rail

BRB 300 Blackout 10.5" Pistol/SBR Upper Assembly (includes BCG & Charging Handle) Specifications Model: BRB30010PU7 Upper: Flat top m-4 upper w/ ext feed ramps, 7075-T6 aluminum, hard coat anodized black type III class II finish w/ laser etched t-markings Caliber: 300 Blackout Barrel: 10.5" 1/8 Twist, Chrome Moly Steel , M-4 feed ramps, Carbine Length Gas System, 5/8x24 threaded Flash Hider Option: A2 Bird Cage (standard). Specwar Flash Hider is optional. Front Site: Rail Height gas block w/ rail. Handguard: UTG Pro 7" Free Float Quad Rail Barrel Finish: Mag Phosphate

KEYMOD UPPER SALE!!!! 16" M4 5.56/223 1:7 Twist 4140 CMV Phosphate Finish, 1/2 28 threaded with FH, YHM Gas System, Color Filled T-Marked Mil Spec Upper, 9" Free Float KEYMOD RAILS. Standard Charging Handle included, Bolt Carrier Sold Separately. Add a Phosphate BCG for $75 with purchase of Upper. Sku: 10164 Use PROMO Code- BCG75 at checkout for $25 OFF. Add M4 223/556 Bolt Carrier Group: http://www.nwcp-tactical.com/products/10167.html

The shortest of the non-NFA models with a removable muzzle device, the PWS MK116 Upper is a crowd favorite. The MK116 is designed for a multitude of uses and retains lethal capability out to 500 meters with varying types of ammunition. The handguard features the VLTOR KeyMod System which comes standard with two 2 sections of 1913 rail as well as a continuous 1913 top rail.

Up for sale one TSS Custom A3 upper with a 16" melonite barrel. 7"-12" Free float quad rail. Twist 1:7, Comes with bolt carrier group and charging handle.

CBC/Hera Arms 300 AAC Upper Assembly is chambered in 7.62×35 and will fit onto any standard AR-15 lower receiver. Our CBC upper receiver group, is assembled from premium components into a high performance-package. Upper Receiver: A3 Flat-Top, Forged 7075-T6 Aluminum Barrel Length: 16″ Barrel Contour: SOCOM Barrel Material: 4150 Chrome Moly Steel Muzzle Thread Pattern: ⅝ x 24 Chrome Lined: No Barrel Finish: Nitride Twist Rate: 1 in 8″ Chamber: 7.62×35 ,300 AAC M4 Feed Ramps: Yes Muzzle Device: A2 Gas System Length: Pistol Gas Block Diameter: 0.750″

Through September 30th, you can save with our coupons on CMMG and Colt M4 upper receivers. Enter the coupon code in the DISCOUNT CODE box at checkout. Offer good while supplies last. See the links below for the particular upper, coupon code, and the total amount you save after the coupon code. Our prices are for credit cards. We offer a 3% discount for check or money order. Prices include shipping and full insurance (covers damage OR theft, not just damage like other retailers).

CBC/Hera Arms .223/5.56×45 Upper Assembly will fit onto any standard AR-15 lower receiver. Our CBC upper receiver group, is assembled from premium components into a high performance-package. Information Upper Receiver: A3 Flat-Top, Forged 7075-T6 Aluminum Barrel Length: 16″ Barrel Contour: Socom Spiral Fluted Barrel Material: Stainless Steel Muzzle Thread Pattern: 1/2 x 28 Chrome Lined: No Barrel Finish: Stainless Steel Twist Rate: 1 in 9″ Chamber: 5.56×45 M4 Feed Ramps: Yes Muzzle Device: A2 Stainless Steel Gas System Length: Carbine Gas Block Diameter: 0.750″

Palmetto has PSA Brand (not PTAC) uppers in stock lower than before

AR-15 CBC Arms 5.56x45 Upper Assembly is chambered in 5.56x45 and will fit onto any standard AR-15 lower receiver. Our CBC upper receiver group, is assembled from premium components into a high performance-package. Upper Receiver: A3 Flat-Top, Forged 7075-T6 Aluminum Barrel Length: 16″ Barrel Contour: SOCOM Barrel Material: 4150 Chrome Moly Steel Muzzle Thread Pattern: ⅝ x 24 Chrome Lined: No Barrel Finish: Nitride Twist Rate: 1 in 8″ Chamber: 5.56x45 M4 Feed Ramps: Yes Muzzle Device: A2 Gas System Length: Carbine Gas Block Diameter: 0.750″

KG Venom 5.56mm Pistol Upper FEATURES: 8.25" 4150 V Chrome Moly Salt Bath Nitride Coated 1x7 5.56 Barrel T-Marked Upper with M4 Feed Ramps Steel Micro Gas Block 7" 6061 T6 Aluminum Free float Quad rail Hand Guard A2 Flash Hider BCG is a M16 Style, MPI Tested Bolt with Chromed Lined Carrier and Chromed Lined Gas Key Item #229031

Elite Tactical Components, www.elitetacticalcomponents.com, has a NEW shipment of the ever popular DTI AR-15 16" M4 Flat Top Complete Upper 1/9 Twist - Chrome Moly - IN STOCK, READY TO SHIP & FLASH SALE GOING ON NOW - $359.99! http://www.elitetacticalcomponents.com/dt1009-s Includes: 16" M4 1/9 Twist Chrome Moly Vanadium (CMV) Barrel Flat Top Upper with M4 Feed Ramps F-Marked Front Sight Base AR-15 Bolt and carrier assembly Properly staked and sealed gas key Charging handle CAR handguards

The Rock River Arms 20 Inch Coyote Rifle complete upper half is the perfect upper receiver to complete your long range predator rifle! Featuring a standard bolt carrier group, 20" chrome moly heavy barrel, Smith Vortex flash hider, and RRA Deluxe extended handguard, this upper is ready to be dropped on to your existing lower. Features: Caliber: .223 Wylde (5.56NATO and .223 Remington) Barrel: 20" Chrome Moly HBAR (1:9 Twist Rate) Gas System: Rifle Length Upper Receiver: A4 Muzzle Device: Smith Vortex Flash Hider (1/2x28 thread pitch) Gas Block: Light Varmint Gas Block w/ Sight Rail

AACO Barrel Length 10.5" 5.56 Nato Chamber Phosphate barrel finish 1 in 7" twist YHM-5000 free Float Rail M4 Profile Barrel YHM Flip Up Front Sight/Gas Block M4 Feedramps Forged Upper T-marks Includes Standard Charging Handle

What sets Troy Upper Receivers apart is the foundation they are built on: Troy’s Alpha Rail. Experience unparalleled strength and durability at an exceptional price. Limited quantities available. First come, first served. Upgrade your stock with Troy BattleReady accessories at Special Holiday pricing. Troy’s 16" Alpha Upper Receiver includes: Flat top receiver 16" 5.56mm Troy Individual Carbine 1/7 chrome Vanadium, Nitrited, match grade barrel Medieval Flash Suppressor Bolt carrier group Charging Handle 13” Alpha Rail with integrated front sight

Ice Arms complete side charging free floated uppers ready to snap on your lower.

Free Shipping with Coupon Code - SLICK The 5.56 Carbine Base 16" Upper is a standard M4 style upper that incorporates the patented Adams Arms technology. The piston system parts and the barrel have been treated with our salt nitride Meloniting process making them harder and more corrosive resistant than hard chrome. Add the patented Adams Arms piston system and you'll have an upper that will run cleaner, cooler, and longer than any other AR upper you own. Type of Barrel: 1:7 Barrel Length: 16" Chamber: QPQ Melonite / Black Nitride Chokes: A2 Description: Gas Piston

Elite Tactical Components, www.elitetacticalcomponents.com, brings you the VLTOR Modular Upper Receiver with Bolt Assist & Shell Deflector - MUR-1A - IN STOCK & ON SALE NOW - $179!! https://www.elitetacticalcomponents.com/mur-1a

The Modular Upper Receiver (MUR) is a rigid MilSpec flat-top upper receiver made to fit all AR15/M16/M4 rifles and carbines. The MUR was developed to give the customer a MilSpec correct upper receiver with a thicker wall, making the MUR upper receiver a stronger platform. This more rigid upper receiver will increase accuracy and reliability, while extending the life of the interfacing components, such as the bolt carrier group and barrel assembly. The MUR-1S comes with a with a shell deflector and ejection-port/dust cover door but does not feature a forward assist.

Elite Tactical Components brings you the Adams Arms 5.56 x 45 14.5 inch Gas Piston Carbine Evolution UltraLite Upper - IN STOCK & ON SALE NOW - $799!!!!!! MSRP $1183, So SAVE over $375!!! http://www.elitetacticalcomponents.com/adams-arms-5-56-x-45-14-5-inch-gas-piston-carbine-evolution-ultralite-upper-ua-14-5-m-eul-556

Huldra's 5.45 x 39 Upper is complete and ready to go into any mil-spec AR 15 lower. The Huldra patented piston system runs cleaner, cooler and longer than any other AR. The piston parts and barrel are treated with the salt nitride Meloniting process, making them harder than hard chrome. The Melonited process gives the barrel higher lubricity, longer life and a uniform coating and resistance to build-up. The barrel chambers are speed polished to reduce resistance on the cartridge entering and exiting the chamber.

MI-SS12G2 One Piece Free Float Handguard w/ Rail kit MI Billet upper with M4 Feed Ramps MI Low Profile Gas Block MI-Carpenter 158 Bolt Carrier Group FN 16" Mid-Legth Hammer Forged, Chrome Line, 5.56x45mm Chamber, 1:7 Twist medium contour barrel BCM Mod 4 Gunfighter Charging Handle Hand Built in Small Quantities by former Military Armorer Every Upper Factory Test Fired for Function

Elite Tactical Components brings you the Adams Arms 5.56 11.5" Carbine Tactical Elite Piston Upper - SAVE OVER $350 NOW WHILE QUANTITIES LAST!! http://www.elitetacticalcomponents.com/ua-11-5-c-te-556 The Adams Arms 5.56 11.5" Carbine Tactical Elite Piston Upper •Adams Arms 11.5” Melonited Barrels •M4 Feed Ramps •Chambered in 5.56 NATO •1:7 Right Handed Twist – Carbine Length •10" Extended Free Floating Quad Rail •A2 Flash Hider This is a complete upper which includes a bolt carrier group and charging handle.

Marks Armory 10.5" Pistol 300 AAC Blackout Upper -A3 flattop upper with forward assist and dust cover -M4 feed ramps -4140 chrome moly steel -1:8 twist -10.5" hbar -5/8x24 threaded muzzle -Competition compensator -Micro gas block -Midlength free float quad rail -Pistol length gas system *Does not include bcg & charging handle All Marks Armory upper assemblies are head spaced and test fired to ensure safety and efficiency.

All DPMS barrel assemblies come with a complete the bolt carrier group and have been test fired for function. DPMS recommends cleaning and lubricating your barrel assembly before use. Item #: BA-MSASS 18" Bull Barrel Fluted 416 Stainless Steel 1-8 Twist Chambered in 5.56x45mm Panther Flash Hider Teflon Coated Black Complete Bolt Carrier Assembly 4 Rail Free Float Tube w/Rail Covers Sights: Backup Rear - Magpul back up rear sight black only flip-up sight; Backup Front - Magpul back up front sight black only flip-up sight Forged A3 Flattop Upper Mid Length Gas System

Spikes Tactical Upper (300BLK) 10" LW w/9" BAR (IN STOCK NOW!) -Spike's Tactical 10.0" Barrel with 1:8 Twist -LW-50 Stainless Steel Barrel - Medium Barrel Profile - Pistol Length Gas System - ST Adjustable Micro Gas Block, .750" Diameter Gas Seat -Spike's Tactical Mil-spec M16 Bolt Carrier Group -ST 9" BAR2 Rail System -Threaded 5/8x24 (Concentric to the Bore) includes an A2 Flash Hider Spike's Tactical Lifetime Warranty

Del-Ton (DTI) 16" Hbar complete upper assembly. 16" Pre-Ban Flat Top Barrel Assembly Includes 16" 1x9 twist, chrome molly barrel flat top upper bolt and carrier assembly charging handle CAR handguards This barrel assembly has a 16" barrel with Heavy profile, 1x9 twist, CAR handguards with single heat shields, and A2 Flash Hider. Product Code: DTIHBAR

7075 T-6 aircraft grade aluminum forging. Flat top upper complete with fwd assist/eject port installed. These uppers do have M4 feed ramps and are finished in hard coat anodizing. Special price on these for a limited time. As cheap as the PSA blem upper for $60 plus their Upper kit for $30, but one low shipping price and its already installed, and of course no blem. Outstanding company with fast shipping. He also has MPI/HPT phosphate/chrome-lined M16 BCGs for $119. Which is about average lately, but if you need one and are already paying shipping, thats a decent price.

5.56 Nato 1-9 twist carbine length barrel. 4140 chrome moly barrel. Parkerized barrel. Extended M4 feed ramps. Billet 7075 M4 upper. Upper height gas block compatiable with popular sights from Troy, YHM etc. Assembled with 100% U.S. made parts. 1 year warranty against malfunction. Test fired to ensure function. Includes charging handle. Bolt carrier group included. A great basic upper to start your build. Sale ends 8/19/13 or while supplies last

Complete 300 AAC BLACKOUT Upper Receiver Assembly. 16" Nitrided 1:7: Twist Barrel, threaded 5/8-24 AAC 51T BLACKOUT™ Flash Hider "Full Auto" BCG KAC URX Rail Ready to drop onto your AR15/M16/M4 lower! Works with an AR lower with "Mil-Spec" push pin locations. Use coupon code "slick" to save another $51 off this fantastic price!

Very nice billet receiver in stock. Just got notification these were back in stock, don't know how many they have but they probably won't last long. Mega Arms SBU Billet Upper, W/O Side Charging Handle Slot Features a stout octagonal shaped profile for increased strength, weight, and stress resistance. Works great in long barrel applications. Machined from billet 7075-T6 aluminum vs. the more commonly used 6061 for a 70% increase in strength. Black Hard anodized with a surface hardness of 60 Rockwell. Finished in Black.

The Sierra .22 Long Rifle-caliber AR-15 upper is compatible with all your full-size AR accessories. Forward assist block promotes full functioning forward assist. Also features a anti-jamming charging handle. 16" W.A.S.P. steel barrel with 1/16" twist. Magazines sold separately. Made in USA. Item: IK-230623

This Del-Ton Pistol Flat-Top AR-15 Upper Receiver comes complete and fully assembled, ready for installation onto any mil-spec lower receiver. The forged 7075 T6 Aluminum upper features an 11.5" Government Contour Barrel, Carbine-Length Gas System, F-Marked Front Sight Assembly, 2-Piece CAR-Style Handguards and an A2 Flash Hider. The barrel's 5.56x45mm NATO Chamber, M4 Feed Ramps and 1 in 9" Twist rifling ensure reliable feeding and functioning with a wide variety of both commercial and surplus ammunition.

This is the complete M4 Barreled Upper Assembly from our unique "SRC” rifle. Its tack-driving 16” M4 profile barrel is chrome lined and machined from 4150 Chrome Moly Vanadium steel - rifled 1 x 9” Right Hand twist - includes an A2 Flash Suppressor. A Picatinny Rail gas block with sling swivel and bayonet lug allows the attachment of a variety of Front Sights. M4 dual heat shield Handguards complete the barrel. The machined aluminum flat top Upper Receiver is complete with Bolt Carrier Assembly, Charging Handle, Forward Assist, and Ejection Port Cover. Model: UR16M4FTB

WINDHAM VEX-SS UPPER 556 20" SS FLUTED Model: VEX-SS Type: Upper Caliber: 223 Rem Caliber: 556NATO Barrel Length: 20" Finish/Color: Black Type of Barrel: Stainless Fluted Fit: AR Rifles Sights: Flat Top Manufacturer Part #: UR20FSSFTVB

Del-Ton AR-15 A3 Flat-Top Upper Assembly 5.56x45mm NATO 1 in 7" Twist 16" Mid Length Government Contour Barrel Chrome Lined Chrome Moly Matte with CAR-Style Handguard, Flash Hider. This Del-Ton Mid-Length A3 Flat-Top AR-15 Upper Receiver comes complete and fully assembled, ready for installation onto any mil-spec lower receiver. The forged 7075 T6 Aluminum upper features a Chrome Lined 16" Government Contour Barrel, Mid-Length Gas System, F-Marked Front Sight Assembly, 2-Piece Polymer Handguards and an A2 Flash Hider.

A3 Style Upper (A3 style means no M4 feed ramps, everything else is the same) Shipping now! Comes complete with forward assist and dust cover.

They only list stuff that's in stock. I got mine in today, just 3 business days after ordering! Compelte M4 A4 Flat top These are " T " Marked W/ M4 Ramps. Yours will come assembled, complete with ejection port door assembly and forward assist assembly. Make an account BEFORE you try to check out. It makes the site crash and you can't do anything. I tried 3 times before I figured this out. DON'T create an account during checkout. Attached picture of one I got today.

Model without forward assist is in stock - AR15.COM Billet Upper Receiver (STRIPPED) Upper- Billet, Black, Stripped, Forward Assist

FFA M4 16" M4 NO BCG NO CARRY HANDLE. Barrel: 16" 4150 chrome moly vanadium barrel. Chambered in 5.56 NATO, with a 1/7 twist, M4 barrel extension, and a carbine-length gas system. The M4 profile barrel is phosphate coated to mil-specs and finished off with an A2 front sight post, standard handguards and an A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, these upper upper receivers are made for us right here in the USA.

Huldra's 5.56 x 45 Upper is a standard mil-spec part that will work on any mil-spec AR lower. The mid-length piston system will give the benefits of a longer forearm by having a more ergonomic grip and longer sight radius for quicker acquisition and less felt recoil. The Huldra patented piston system runs cleaner, cooler and longer than any other AR. The piston parts and barrel are treated with the salt nitride Meloniting process, making them harder than hard chrome. The Melonited process gives the barrel higher lubricity, longer life and a uniform coating and resistance to build-up.

M16A1 type with forward assist opening and case deflector. Comes complete with a tear drop forward assist assembly.

Just in the door! We've got a small quantity of brand new retro uppers! Early M16, no forward assist or case deflector

Windham Weaponry Upper

This is the complete M4 Barreled Upper Assembly from our unique "SRC” rifle. Its tack-driving 16” M4 profile barrel is chrome lined and machined from 4150 Chrome Moly Vanadium steel - rifled 1 x 9” Right Hand twist - includes an A2 Flash Suppressor. A Picatinny Rail gas block with sling swivel and bayonet lug allows the attachment of a variety of Front Sights. M4 dual heat shield Handguards complete the barrel. The machined aluminum flat top Upper Receiver is complete with Bolt Carrier Assembly, Charging Handle, Forward Assist, and Ejection Port Cover. P/N UR16M4FTB

G.I. Forged Flattop Upper (Stripped) A4 /A3 Flat Top Made by current US Govt Contractor. These have the M4 Feed ramps and they are T-Marked. It's an A4 upper receiver which is part of the A3 rifle assembly. Commonly known as a Flattop. G.I. Forged Flattop Upper Complete Complete A4 flat top receiver Made by current US Govt Contractor. These have the M4 Feed ramps and they are T-Marked. It's an A4 upper receiver which is part of the A3 rifle assembly. Commonly known as a Flattop Yours will be assembled, complete with ejection port door assembly and forward assist assembly.