5.56x45mm NATO Rifles

Dirty Bird 20" M16A1 Enhanced 5.56 Retro Upper Assembly - M4 Feed Ramps

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - OD Green

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - Midnight Bronze

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - FDE

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - Black

16" AR 15 Complete Rifle Kit with 15" M-Lok Handguard

Precision Armament HYPERTAP Slim 5.56 Muzzle Brake - 1/2x28 - Stainless

Ambidextrous Side Charging Flat Top AR 15 Upper Receiver

16" Gov Mid M-LOK Upper Assembly - Magpul OD Green

16" Gov Mid M-LOK Upper Assembly - Black

16" 5.56 SOCOM Quad Rail AR-15 Complete Upper

M4E1 Threaded Complete Upper, 14.5" 5.56 Mid-Length Barrel w/ Pinned Epsilon 556SL, 12" M-LOK ATLAS R-ONE HG - Anodized Black

20" Black Nitride 5.56 NATO Government Barrel

16" 5.56 NATO 1:8 Twist Black Nitride M4 Mid-Length Barrel

16" Slick Side Billet 5.56 416R Stainless Midlength 1:7 M-LOK Complete Upper

16" 5.56 NATO Contour 1:7 Mid Length 416R Barrel - Stainless

VG6 Precision ZETA 556 Flash Hider - 1/2x28

16 5.56 Black Nitride 1:9 Carbine M-LOK Government Upper Assembly

16 5.56 Black Nitride Carbine M-LOK Government Upper Assembly

20" 5.56 Phosphate Rifle M-LOK Government Upper Assembly

20" 5.56 Phosphate + Chrome-Lined Rifle M-LOK Heavy Upper Assembly

AERO Precision 16" M4E1 Threaded AR 15 Upper

Ballistic Advantage AR-15 Complete Upper, 16" 5.56 Hanson Midlength Barrel w/15" Logic M-LOK Handguard

M4E1 Enhanced Complete Upper 14.5" 5.56 Mid-Length Barrel w/ Pinned Epsilon 556SL 12" M-LOK HG - Black