Uppers Gun Parts

(3,503 deals total)

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.

AR-15 Upper Receiver Flat-top Upper Receiver (assembled) 7075 Aluminum. Black anodized finish, M-4 feed ramps T-markings on rail. Made in the USA

Brand new Vltor MUR-1A. Use coupon code 8off120 for $8 off at checkout.

Elite Tactical Components, www.elitetacticalcomponents.com, brings you the DTI AR-15 16" 1x9 Twist Mid Length Flat Top Complete Upper - IN STOCK AND ON SALE NOW - $359.99 http://www.elitetacticalcomponents.com/manufacturers/del-ton/dt1023 Includes: 16" Mid length chrome moly 4140 barrel Flat top upper with T-marks AR-15 bolt carrier and assembly Charging handle Mid-length handguards 1x9 twist with A2 Front Sight Complete Uppers, ready to attach to your lower and fire. Uppers come with Lifetime Warranty.

The Spike's Tactical 16" LE Upper has a 1:7 Twist, M4 profile Mil-spec barrel, with a carbine length gas system and A2 flash hider. The A2 front sight base is F-marked, and has a .75" diameter gas seat. This is a complete upper with a Spike's M16 BCG, M4 double heat shield handguards, and is Mil-spec compliant. Backed by the Spike's Tactical Lifetime Warranty Item #: 9920 Manufacturer: Spikes Tactical

The Spike's Tactical 16" Mid-length LE Upper has a 1:7 Twist, Government profile barrel, with a mid-length gas system and A2 flash hider. The A2 front sight base is F-marked, and has a .75" diameter gas seat. This is a complete upper with a Spike's M16 BCG, mid-length handguards, and is Mil-spec compliant. Backed by the Spike's Tactical Lifetime Warranty Item #: 10072 Manufacturer: Spikes Tactical

The Adam Arms 5.56 Carbine Tactical Elite Piston Upper Adams Arms 16” 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. Shipping is a flat $8.99 Always check you local laws before purchasing any firearm or similar item

AR-15 Flat Top Upper With M4 Feed Ramps stripped flat top upper receiver with M4 feed Ramps

Elite Tactical Components, www.elitetacticalcomponents.com, your PREMIER Adams Arms Distributor, brings you the Adam Arms 5.56 Carbine Tactical Elite Piston Upper - ON SALE NOW $889 (SABE $225!!!!)!!

Made for the M4, HK-416, AR-15 and M16 platform to cycle full auto with both 300 BLK subsonic and supersonic ammo within normal operating specifications with no user adjustments required. Free-floating railed forearm helps maintain accuracy while providing for the mounting of accessories. Bolt carrier group meets full-auto specifications (full auto operation requires a full-auto lower receiver). Bolt uses Carpenter 158 steel. Gas-key is heat-treated and properly staked. Carrier is internally chrome-lined.

Marks Armory Custom Build 10.5" 5.56 Pistol Upper Barrel: 10.5" chrome moly 5.56 with 1:9 twist USA Manufactured Upper Receiver: A3 USA Manufactured w/ forward assist & dust cover Gas Tube: Standard carbine length Gas Block: Rail Height w/ top and bottom rail Flash Hider: Standard A2 Quad Rail: Free float carbine length quad rail This upper does NOT include bcg group or charging handle. Head spaced and test fired. ALL NFA RULES APPLY.

Features: -7.5" 5.56 stainless steel barrel w/ 1:9 twist -Pistol length free float quad rail -Rail height gas block -A3 Flattop with forward assist and dust cover -Standard A2 flash hider This pistol upper assembly does NOT include bcg or charging handle. ALL NFA RULES APPLY.

Elite Tactical, www.elitetacticalcomponents.com, brings you the DTI 16" Pre-Ban M4 1x7 CMV Chrome Lined Flat Top Barrel Assembly with F-Marked Front Sight Base, M4 Feed Ramps and HPT & MPI Tested Bolt ON SALE NOW FOR $409.99! (Retail $460!) http://www.elitetacticalcomponents.com/dti-ar-15-16-m4-1x7-chrome-lined-complete-upper-dt1028 Includes: DTI 16" 1x7 twist chrome moly vanadium chrome lined M4 barrel Flat top upper with M4 feed ramps Bolt and carrier assembly Charging handle CAR handguards Barrel: Chrome Moly Vanadium M4 Feed Ramps Chrome Lined 16" Length 1x7 Twist

Check out the link to our website: www.marksarmory.com We have unbelievable deals on firearms, parts and asseccories! The featured deal is Del-Ton ($409.99) & CMMG ($459.99) 16" 5.56 Chrome Lined M4 Complete Upper Assemblies! BONUS COUPON CODE FOR FREE SHIPPING!!!! Coupon code: stealofadeal

Elite Tactical Components, www.elitetacticalcomponents.com brings you the DTI AR-15 16" Pre-Ban M4 Flat Top Complete Upper 1/9 Twist - Chrome Moly 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 Ergo Z Rail Handguard & UTG Tri-Rail Barrel Mount Complete Upper, ready to attach to your lower and fire. Upper comes with Lifetime Warranty. Technical Specs:

Infinite Arms is proud to now offer complete M4 uppers. These are built for us by a "well known company, but we can't tell you who due to the price. Mil-spec certified 4140 chrome-moly vanadium steel M4 contour barrel 5.56x45 NATO chamber 1/9 twist Hard chrome lined chamber and bore M4 feed ramps 11 degree recessed target crown Parkerized Barrel A2 Flash hider installed with Peel washer Forged A3 upper receivers are T marked and have extended feed ramp cuts (M4 ramps) Semi Auto Bolt Assembly Single or Quad railed gas block Test fired