Upper Receivers/Conv Kits

The Noveske N4 Afghan 14.5" Upper is chambered in 6mm ARC and features a 14.5" 416R stainless-steel barrel with a 1:7 twist, 3-land-and-groove rifling, and a mid-length gas system. The barrel...

The Noveske N4 Afghan 14.5" Upper is chambered in 5.56mm and features a 14.5" 416R stainless-steel barrel with a 1:7 twist and mid-length gas system. The barrel includes a hand-polished Noveske Match...

The Noveske N4 Recon 16" Upper is chambered in 5.56mm and features a 16" 416R stainless-steel barrel with a 1:7 twist and a mid-length gas system. The barrel includes a hand-polished Noveske Match...

The Noveske N4 Infidel 13.7" Upper is chambered in 5.56mm and is available with either a 416R stainless-steel or a cold-hammer-forged barrel, both with a 1:7 twist. The 416R configuration includes a...

The Noveske 4th Generation N4 Upper Receiver is a precision-machined billet receiver made from 7075-T6 aluminum, featuring extended feed ramps and Type III hardcoat anodizing. It includes a Mil-Spec...

The Noveske N4 SPR 18" Upper is chambered in 6mm ARC and features an 18" 416R stainless-steel barrel with a 1:7 twist, 3-land-and-groove rifling, and a rifle-length gas system. The barrel includes a...

The East India Starter Kit is a building block for any build you wish to do. Properly assembled with a USGI barrel nut, it is a great way to finish your upper without having to know how to install a...

Colts Manufacturing Le6920eprii Pro, Upper Receiver, 5.56 Nato, 16.1" Barrel, Fits Ar-15/m4 Lower Receivers, Matte Finish, Black Le6920-eprii-pro-ckModel: LE6920EPRIIProduct Type: UpperFinish/Color:...

Colts Manufacturing Le6920eprii, Upper Receiver, 5.56 Nato, 16.1" Barrel, Fits Ar-15/m4 Lower Receivers, Matte Finish, Black Le6920-eprii-ckModel: LE6920EPRIIProduct Type: UpperFinish/Color:...

Noveske Rifleworks is an American firearms company. They are headquartered in Grants Pass, Oregon and are known for their work with the AR-15 platform and the KeyMod system.Features :Noveske 4th...

The revolutionary and patent-pending FiteLite DFX (Dual-Feed Conversion) is a compact and lightweight ,drop-on, upper receiver group that readily fits all MIL-Spec AR15/M16 or M4 pattern lower...

FightLites groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver...

The groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without...

The groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without...

The groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without...

Barrett Mrad Barrel Conversion Kit, 6.5 Creedmoor, 24" Fluted Barrel, 10rd Magazine 18529

Barrett Mrad Barrel Conversion Kit, 300 Norma Magnum, 26" Barrel, 10 Rounds, 1 Magazine 19121

This Daniel Defense M4A1 FSP AR15 style Upper Receiver Group was built for customers wanting a firearm inspired by USSOCOM SOPMOD Block II. This upper features the M4A1 FSP RIS II picatinny quad rail...

Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine...

Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine...

Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine...

Advantage Arms Conversion Kit: Convert your 9mm/.40 S&W Glock down to 22LR so trips to the range dont break the bank. Or if you want to teach your kid the fun of shooting but dont want him/her to...

Geissele Automatics Super Duty Mod1, Complete Upper Receiver, 556nato, 14.5" Pinned (16" Oal) Barrel, M-lok Free Float Handguard, Geissele Airborn Charging Handle, Nanoweapon Reliability Enhanced...

Advantage Arms Conversion Kit: Convert your 9mm/.40 S&W Glock down to 22LR so trips to the range dont break the bank. Or if you want to teach your kid the fun of shooting but dont want him/her to...

Geissele Automatics Super Duty Mod1, Complete Upper Receiver, 556nato, 16" Barrel, 1:7 Twist, Huxwrx Flash Hider-qd 556, 15" Smr Mk16 M-lok Free Float Handguard, Geissele Airborn Charging Handle,...

Geissele Automatics Urg-i, Near Clone, Complete Upper Receiver, 556nato, 14.5" (16" Oal) Barrel, 1:7 Twist, Pinned And Welded Surefire 4 Prong Flash Hider, Desert Dirt Color 13.5" Smr Mk16 M-lok Free...

Geissele Automatics Super Duty Mod1, Complete Upper Receiver, 556nato, 14.5" Pinned (16" Oal) Barrel, M-lok Free Float Handguard, Geissele Airborn Charging Handle, Nanoweapon Reliability Enhanced...

The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept...

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile...

The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3" 6" and 9...

The heart of the BAD Authority Elite upper receiver is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK...

Battle Arms Development Authority Elite, Complete Upper Receiver, 556nato, 16" Barrel, Fits Ar-15, M-lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 Ambidextrous Charging Handle And...

Battle Arms Development Workhorse, Complete Upper Receiver, 556nato, 16" Barrel, Fits Ar-15, M-lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle And...

Barrett Mrad Barrel Conversion Kit, 300 Prc, 26, 10rd 18431

The PWS MK1 MOD 2-M line, revamped for 2018" features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a variety of features exclusive...

The Radian Model 1 Upper Receiver and Hand Guard are precision CNC machined as a matching set, structurally reinforced in critical areas for improved strength and rigidity. The upper receiver is cut...

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that...

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that...

The Non-Reciprocating Charging Handle (NRCH) assembly upgrade kit gives current FN SCAR Owners even more adaptability and modularity for their rifles with new, nonreciprocating, dual charging...

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that...