Shop 1,031 Deals on 5.56x45mm NATO Semi-Auto

American Tactical Omni Hybrid Maxx 5.56 / .223 Rem 16 Barrel 30-Rounds

HM Defense Defender M5 .223 Rem/5.56 Semi-Automatic AR-15 Rifle - HM15F-MB-556

ET Arms Inc Omega-15 5.56x45mm 16" AR Rifle, Black - High-Performance Reliability and Precision for Tactical and Range Use - ETAGOMEGA556ML10

Angstadt Arms .223 Remington AR Pistol with 11.5" Barrel, Black - AAUDP56P01

Angstadt Arms .223 Remington AR Rifle with 16" Barrel, Gray - AAUDP56RGR

B&T .223 Remington AR Pistol with 12.5" Barrel, Black - BT36051US

CMMG Resolute MK4 5.56x45mm 16.10" AR Rifle, Sniper Gray - 55AC780SG

Stag Arms 3-Gun Elite 5.56x45mm 18", Black - STAG15010611

Sons of Liberty Gun Works .223 Remington AR Rifle with 18" Barrel, Black - M47618

A3 5.56 10.5'''' - A3 Pistol 5.56 10.5''''

ATI Alpha Maxx HGA 5.56x45mm 7.5" 30rd AR Pistol, Black

Sons of Liberty Gun Works M4-89 5.56x45mm 13.70" AR Rifle, Black - Compact, Reliable and High-Performance for Tactical Use - M48913.7XL

ET Arms Inc ETAGOMEGAP130 Omega-P1 5.56x45mm NATO 30+1 7.50 in Black M-LOK Free-Float Handguards/Black Polymer Receiver/Black Buffer Tube/ Black A2 Grips, Pistol

LWRC DI MultiCam 5.56 / .223 Rem 16.1 Barrel 10-Rounds

Heizer Def. Pocket Ar Ported .223 Rem Black Matte PAR1BLKP

Desert Tech MDRX .223 Wylde AR Rifle with 20" Barrel, Black - MDRRFB2010FECB

Warrior Systems WSM15-MS 5.56 / .223 Rem 16 Barrel 50-Rounds

CMMG Resolute MK4 5.56x45mm 16.10" AR Rifle, Tungsten Gray - High-Performance AR Rifle, with Precision Engineering - 55AC780TNG

CMMG Resolute MK4 5.56x45mm 16.10" AR Rifle, Coyote Tan - High-Performance AR Rifle, with Precision Engineering and Stylish - 55AC780CT

Steyr Arms AUG A3 M1 5.56 20" Bbl Mud Semi-Auto Bullpup Rifle w/(1) 10rd Mag CA Compliant Fin Grip & No Vertical Fore Grip AUGM1MUDNATOLCA

Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Black, Green - BROCRYPTGRN

Sons of Liberty Gun Works .223 Remington AR Rifle with 13.7" Barrel, Black - PATROLSL13.7CACOMP

Sons of Liberty Gun Works .223 Remington AR Rifle with 16" Barrel, Black - M48916CACOMP

Anderson Manufacturing Utility MLok Magpul MOE 5.56 16" 30rd Rifle, Black - ANDB2-K869-A025