AR Parts in 5.56x45mm NATO

CMMG MK4 Upper Receiver Midnight Bronze 5.56 / .223 Rem 14.5 Barrel

Battle Arms Development WORKHORSE Complete Upper 5.56 10.5 Threaded Barrel M-LOK Handguard

Lead & Steel Llc LS556PEN-MID-13.9 5.56mm 13.90 Pencil Profile Features M4 Feed Ramps

Lead and Steel AR-15 Barrel 5.56 14.5 Threaded Barrel Mid Length

Anderson Manufacturing Upper Receiver Stripped with Forward Assist for AR-15

AR-STONER T-Series AR-15 Bolt Carrier Group 5.56x45mm NATO Nickel Boron

TacFire AR-15 AR Barrel 5.56 16 Barrel

Ar-15 Bolt Catch Abc/R V3 5.56mm - Ar-15 Abc/R V3 Bolt Catch Forward Bias Dimpled Black

Ar-15 Handguards M-Lok 5.56mm - Ar-15 Handguard 15in. M-Lok Black

Tactical Springs LLC Reduced Power Spring Reliability Kit

ANDERSON AR-15 Lower Parts Kit

ANDERSON UPPR RCVR ASSMBLY AM15 BLK

Colt M4CQB AR-15 Barrel 5.56x45mm NATO 10.3" Government Contour 1:7" Twist Parkerized with Front Sight Base

American Built Arms AR-15 Bolt Carrier Group 5.56x45mm NATO Nickel Boron

FORTIS MFG Switch Mod 1 Handguard Black MLOK fits AR-15 13"

Cobalt Kinetics CK-Pro Urg Complete Upper Flat Dark Earth 5.56x45mm NATO 13.7 Barrel

Cobalt Kinetics CK-Pro Urg Complete Upper Flat Dark Earth 5.56 7.5 Barrel

Cobalt Kinetics CK-Pro Urg Stripped Upper CK Green 11.8 Handguard

FORTIS MFG Hammer Charging Handle Olive Drab Green fits AR-15

FORTIS MFG Billet Dust Cover fits AR-15 Gray

POF Ambidextrous Charging Handle Archangel AR-15 223

Noveske Afghan Barrel Silver 5.56 14.5 Threaded Barrel

Noveske N4 Carry Handle Stripped Upper Receiver Black

Ballistic Advantage Modern AR-15 16" Mid-Length Gas 5.56 1:7 CMV Barrel