Radical Firearms Uppers Gun Parts
(31 deals total)

  • Uppers
  • Radical Firearms
from $369.99
MPN: RF01624
Brand: Radical Firearms
Caliber: 223/5.56
Type: Complete Lower Receiver
Action: Semi-Automatic
from $279.99
MPN: RF00325
Brand: Radical Firearms
Caliber: .223 Remington/ 5.56 NATO
Type: Upper

Filter Radical Firearms Uppers Gun Parts

2 weeks ago
This Radical Firearms 5.56 Barreled Upper features a 16-inch 5.56 NATO SOCOM profile barrel with a mid-length gas system and a 15-inch Gen 3 RPR handguard. The installed BMD muzzle brake enhances recoil control. Features a low-profile .750 gas block. This upper does not include a bolt carrier group or charging handle. The barrel is threaded with a 1/2x28 pitch and features a 1 in 7 rate of twist for optimal performance, as well as a melonite finish, for durability and corrosion resistance. The free float M-LOK compatible handguard is comfortable and promotes excellent heat dissipation.
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2 weeks ago
Complete your AR-15 build with the high-performance Radical Firearms AR15 Complete Upper in 5.56 NATO. This upper is designed to handle both 5.56 NATO and .223 Rem cartridges, providing versatility for various shooting applications. It features a robust 16-inch SOCOM contour barrel made from 4140 chrome moly vanadium steel with a protective Melonite finish and a 1:7 twist rate for outstanding accuracy and stability. Key Features: Caliber: 5.56 NATO (also accepts .223 Rem) Barrel Length: 16 inches Barrel Material: 4140 Chrome Moly Vanadium Steel
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2 weeks ago
The Radical Firearms 16" .223 Wylde barreled upper is a match grade drop-in upgrade for your AR-15 build. Crafted with quality materials and covered by Radical Firearms lifetime warranty, this better-than-MIL-SPEC upper receiver provides an outstanding solution for any budget. With the hard work done before it arrives on your door step, you only need to drop in your favorite charging handle, bolt carrier group, and sights! Features: - 15" HKS freefloat M-LOK handguard - .223 Wylde Chamber - 416R stainless steel barrel - Medium contour barrel - Mid-Length gas system
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1 month ago
Note: Does not include bolt carrier group or charging handle.
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2 months ago
Start your next AR-15 build off right with a quality forged upper receiver. The Radical firearms stripped upper receiver is a great option whether you want to build an M4 style carbine or a completely custom AR-15 rifle. This Upper is forged from durable 7075 aircraft grade aluminum that is stronger than other materials commonly used in AR-15 receivers. It also has a tough type 3 hardcoat anodized finish that provides excellent wear and corrosion resistance, so you can count on this receiver lasting a long time.
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2 months ago
The Radical Firearms 8.5 inch Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 8.5 inch HBAR Profile Barrel and A2 Flash Hider. Bolt Carrier Group and Charging Handle are additional. 8.5 inch HBAR Melonite Barrel. 4150 V Chrome Moly. 1 in 7 inch twist rate. 300 AAC BLACKOUT Chamber. 5/8x24 Thread Pitch. HPT/MPI.
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4 months ago
Does not include bolt carrier group or charging handle.
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4 months ago
The Radical Firearms 300 AAC Blackout Upper Assembly is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! These AR15 Upper Receivers from the innovators at Radical Firearms feature a forward assist for increased accuracy and a faster cool down time. With an ejection port door the Radical Firearms 16 in. Blackout Upper Assembly easily drops in to any firearm without the need of a gunsmith. The Radical Firearms Upper Receiver Assembly is a fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter.
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8 months ago
Meant to be regarded as a superb product for almost any person, we're sure you will appreciate the Radical Firearms RF Upper Assembly 16in 7.62x39 w/ A2 Flash Hider .These AR15 Upper Receivers through the skilled product professionals at Radical Firearms are made working with dependable and efficient materials, as a way to provide you with a product which is going to be useful for a long time.
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10 months ago
5.56 NATO rifle kit with 16-inch barrel with a carbine length gas system and 15-inch RPR M-LOK handguard and MFT pistol grip from Radical Firearms. Contains everything needed to turn your stripped lower receiver into a fully functional AR-15 rifle. Does not include stock. Black finish. The Radical Firearms RPR free float rail system is designed to maximize accuracy while minimizing heat. Includes Radical Firearms LPK. Features: 16-inch barrel with mid-length gas length 4140 Chrome Moly Vanadium barrel, melonite 5.56 NATO barreled upper
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13 months ago
The Radical Firearms 20” .450 Bushmaster HBAR Complete Upper Receiver is a law enforcement grade, drop-in solution for your next AR build. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC upper receiver provides an outstanding solution for any budget. Arrives at your door with the hard work done. Complete this build with your favorite lower receiver and sights then head for the range!
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18 months ago
Get law enforcement grade quality when you swap in this Radical Firearms 16 in. 5.56 SOCOM Upper Assembly. These AR15 Upper Receivers crafted by Radical Firearms are incredibly easy to install since they come fully assembled and utilize drop-in installation. With the RF 16in 5.56mm SOCOM Radical Rail Upper Assembly, you get full customization of attachments with the integrated Keymod attachment points on the sides and bottom as well as the Picatinny rails on the fore end which let you mount lights, optics, lasers, bipods, and other accessories as you please.
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19 months ago
Note: Does not include bolt carrier group or charging handle.
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20 months ago
Does not include bolt carrier group or charging handle.
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23 months ago
The Radical Firearms 7.5 inch M4 Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 7.5 inch M4 Profile Barrel and A2 Flash Hider. Bolt Carrier Group and Charging Handle are additional. 7.5 inch M4 Melonite Barrel. 4150V Chrome Moly. 1 in 7 inch twist rate. HPT/MPI. 5.56 NATO Chamber. M4 Feed ramps.
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23 months ago
Radical Firearms features this SOCOM barrel upper receiver with a 5.56 NATO profile and is a MIL-STD upper that's ready to drop into any MIL-STD lower receiver. The fact that it's a SOCOM barrel means the contoured barrel's extra thickness allows a more extended stream of semi-auto fire. Features: - Barrel: 16" - Barrel Profile: SOCOM - Caliber: .5.56 NATO - Action: semi-automatic - Muzzle Device: A2 Flash Hider - Twist Rate: 1:7 - Barrel Finish: Melonite - Muzzle Thread: 1/2 x 28 Threads Per Inch - Handguard Type: Free Float
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24 months ago
NOTE: This barreled upper does not include a bolt carrier group or charging handle.
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24 months ago
The Radical Firearms AR-15 upper receiver assembly comes ready out of the box to attach to any Mil-Spec lower receiver. It has a forged M4 railed upper so you can easily attach scopes and red dot sights to the MIL-STD rail. The upper receiver is does not include bolt carrier group or charging handle but comes complete with a Mil-Spec upper parts kit that includes an ejection port cover and forward assist. The barrel is 16” of 4140 chromoly steel with a Melonite coating and is attached via a steel barrel nut.
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26 months ago
The Radical Firearms 10.5" M4 Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver. This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 10.5" M4 Profile Barrel and A2 Flash Hider, Bolt Carrier Group and Charging Handle. Specifications for Radical Firearms Complete Upper Assembly 10.5 inch 5.56 M4 Contour, A2 Flash Hider, w/BCG and CH: Color: Black
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28 months ago
Radical Firearms Complete Upper Assembly, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Black, MLOK Handguard, A2 Flash Hider RF00325 MPN#: CFU16-5.56SOC-15RPR UPC#: 816903025633
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Gunprime 221
28 months ago
Introducing Radical Firearms 12.7x42 Complete Upper. After a year of development, a few thousand rounds, and a pretty sore shoulder, we feel this is absolutely one of the best uppers we ever offered... This provides a high-quality upper for those looking for more POWER out of their rifle. Comes complete and assembled with Upper Receiver, Forward Assist, Barrel Nut. 16 inch 12.7x42 Barrel and our new Panzer Muzzle Brake to take the bite out of the round. Bolt Carrier Group and Charging Handle come complete with this upper.
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28 months ago
If you're shopping for an amazing bargain for the Radical Firearms Complete Upper Assembly 16 inch 300 AAC HBAR Contour, A2 Flash Hider, w/BCG and CH, then you have showed up at the right spot.Formulated working with several of the very most robust and dependable components available, these AR15 Upper Receivers from Radical Firearms offers you a product that will give years of dependability.Radical Firearms has been making superior quality merchandise for a number of years, and the Radical Firearms Complete Upper Assembly 16 inch 300 AAC HBAR Contour, A2 Flash Hider, w/BCG and CH is their appr
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28 months ago
The Radical Firearms Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, RF Barrel Nut. HBAR Barrel and A2 Flash Hider. Our free-float handguard: Forward Guard Shield (FGS) keeps your hands cool and provides plenty of room for accessories.
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28 months ago
The Radical Firearms Complete Upper Assembly 16 inch 5.56 M4 Contour, A2 Flash Hider, w/BCG and CH was made in order to be the best item for any person trying to find an outstanding selection.Formulated using some of the most extremely sturdy and long lasting substances around, these AR15 Upper Receivers via Radical Firearms will present you with a product that gives you a great deal of stability.Radical Firearms has been making superior quality products for a very long time, and the Radical Firearms Complete Upper Assembly 16 inch 5.56 M4 Contour, A2 Flash Hider, w/BCG and CH is their manner
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28 months ago
If you're looking for a law-enforcement grade upper receiver kit, the Radical Firearms 8.5 in. 300 AAC Blackout Upper Assembly is a full kit that comes with complete parts and is already assembled with the upper receiver, forward assist, ejection port door, barrel nut, 8.5in HBAR profile barrel, A2 flash hider, and a Forward Guard Shield (FGS) free-float handguard. Assembling a high quality rifle is easier than ever with these AR15 Upper Receivers by Radical Firearms due to its drop-in installation that is ready to be mounted to your AR-15 platform lower receiver instantly.
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30 months ago
Get law enforcement grade quality when you swap in this Radical Firearms 16 in. 5.56 SOCOM Upper Assembly. These AR15 Upper Receivers crafted by Radical Firearms are incredibly easy to install since they come fully assembled and utilize drop-in installation. With the RF 16in 5.56mm SOCOM Radical Rail Upper Assembly, you get full customization of attachments with the integrated Keymod attachment points on the sides and bottom as well as the Picatinny rails on the fore end which let you mount lights, optics, lasers, bipods, and other accessories as you please.
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65 months ago
Get law enforcement grade quality when you swap in this Radical Firearms 16 in. 5.56 SOCOM Upper Assembly. These AR15 Upper Receivers crafted by Radical Firearms are incredibly easy to install since they come fully assembled and utilize drop-in installation. With the RF 16in 5.56mm SOCOM Radical Rail Upper Assembly, you get full customization of attachments with the integrated Keymod attachment points on the sides and bottom as well as the Picatinny rails on the fore end which let you mount lights, optics, lasers, bipods, and other accessories as you please.
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67 months ago
The Radical Firearms 300 AAC Blackout Upper Receiver Assembly is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This Radical Firearms 300 AAC Blackout Upper Receiver Assembly is a fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, RF Barrel Nut. Bolt Carrier Group and Charging Handle are additional. SKU#: FU16-300HBAR-12FCR UPC#: 816903025039
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68 months ago
Introducing Radical Firearms 458 SOCOM Complete Upper. After a year of development, a few thousand rounds, and a pretty sore shoulder, we feel this is absolutely one of the best uppers we ever offered... This provides a high-quality upper for those looking for more POWER out of their rifle. Comes complete and assembled with Upper Receiver, Forward Assist, Custom Ejection Port Door, Barrel Nut. 16 inch 458 SOCOM Barrel and our new Panzer Muzzle Brake to take the bite out of the round. Bolt Carrier Group and Charging Handle come complete with this upper.
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96 months ago
Radical Firearms COMPLETE 10.5" Upper in 7.62x39mm The Radical Firearms 10.5" HBAR Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Charging Handle, Bolt Carrier Group, Forward Assist, Ejection Port Door, Barrel Nut. 10.5" HBAR Barrel and A2 Flash Hider.
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100 months ago
Radical Firearms COMPLETE 10.5" SOCOM Upper in 5.56 For a limited time Atlantic is including FIVE FREE MAGAZINES with your order For new purchases only, magazine style and condition may vary
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