AR Parts in 5.56x45mm NATO

Anderson Nickel Boron AR 15 Bolt Carrier Group

16" Patriot 5.56 NATO AR-15 Complete Upper

UTG MR556 M-LOK 15" Super Slim Free Float Handguard (BLK)

Yankee Hill Machine AR 15 Dust Cover - 5.56 NATO

Armaspec AR Spare Parts Kit

CMMG Pistol Receiver Extension Kit

Yankee Hill Machine Phantom 5.56MM AR 15 Muzzle Brake

Battle Arms Titanium M16 BCG With ArmorTi Coating AR15

Battle Arms M16 .223/5.56 Bolt Carrier Group - Nitride

16" 5.56 NATO Mid-Length AR 15 Barrel

7.5" 5.56 NATO 1:7 Stainless Steel Pistol Length Barrel

.223/5.56 Bolt Carrier Group - Blue PVD

.223/5.56 Bolt Carrier Group - Chameleon

LMT Defense AR-15 Full-Auto 5.56mm Carrier w/ Enhanced Bolt w/ Ambidextrous Charging Handle

LMT Defense 5.56 Full-Auto Bolt Carrier Group + Ambidextrous Charging Handle Combo - BCG & Charging Handle Upgrade Kit

BattleHawk Armory Complete AR-15 5.56/300 Black Nitride Logoed Bolt Carrier Group With AR-15 WarHammer Mod2 Black Micro Lever Ambi Black Charging Handle

BattleHawk Armory Complete AR-15 5.56/300 Black Nitride Logoed Bolt Carrier Group w/ Ambi Large Lever Charging Handle

BattleHawk Armory AR-15 16 5.56mm, 15 MLOK Handguard, Pencil Profile, Black Complete Upper Receiver w/ BCG & CH

BattleHawk Armory Complete M16 AR-15 5.56/300 FDE PVD Logoed Bolt Carrier Group With AR-15 WarHammer Mod2 FDE Large Lever Ambi Black Charging Handle

The Triggered Company LAT Ambi Trigger, H2 Buffer & PMAG D-60 Bundle

The Triggered Company Disruptor AR-15 Forced Reset 3 Position Black Drop-In Forced Reset Trigger + Magpul PMAG D-60 5.56/.223 60-Round Drum Magazine

The Triggered Company Disruptor AR-15 3 Position Green Drop In Forced Reset Trigger + 10x 30rd Magazines

Colt LE6940 5.56 Monolithic Upper Receiver Assembly - Police Trades

Colt 10.3" CQB 5.56 Upper Receiver - MK18 Clone