All 5.56x45mm The 5.56×45mm NATO is a rimless bottlenecked intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal. Sort by NewestSort by Name Show All Products .22 Short & .22LR .22 WMR .30 Carbine .30-06 Springfield .308 Winchester .380 ACP .40 S&W .410 Gauge / .45 Colt .45 ACP 12 Gauge 20 Gauge 5.45x39mm 5.56x45mm 5.7x28mm 7.62x39mm 7.62x54R mm 9×19mm Luger 9x18mm Makarov Ammunition Bolt-Action Rifles Break-Action Rifles Break-Action Shotguns C&R Eligible Cleaning & Care Custom Gunsmith Services Lever-Action Rifles MA Compliant Magazines NFA Services Pistol Caliber Carbine (PCC) Pre-Ban Firearms Pre-Ban Magazines Precision Rifles Pump-Action Rifles Revolvers Semi-Automatic Pistols Semi-Automatic Rifles Semi-Automatic Shotguns Short Barrel Rifles (SBR) Sights & Optics Specials, Sales, and Services Colt Sporter Match HBAR; .223; w/ Colt Scope; Pre-Ban: MA OK $3,899.99 Colt AR-15 HBAR; .223; Pre-Ban; MA OK $3,699.99 Bushmaster XM15E2S Entry A3 Carbine; Factory SBR $1,649.99 Troy Defense PAR .223; MA OK $1,099.99 Colt Match Target Rifle; .223 $1,100.00 Colt SP1; .223; Pre-Ban; MA OK $3,799.99 Primary Weapons Systems MK1 $1,599.99 Custom Built AR Pattern Uppers Harrington and Richardson SB2 Ultra; .223 Rem; MA OK $600.00 Troy Defense 5.56 Carbine $1,634.99 Polytech AKS-223 Underfolder; Pre-Ban; MA OK $3,500.00 Colt M4 LE Carbine $1,400.00 SIG Sauer P556 Short Barrel Rifle (SBR); 5.56x54mm $1,849.99 SIG Sauer P556 Pistol; 5.56x54mm $1,750.00
