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Page 10 - 5.56mm NATO Rifles at Western Gun Store

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The 5.56X45mm NATO cartridge was designed by James Sullivan, a member of Eugene Stoner's engineering team that developed both the M16 rifle and its original cartridge. The 5.56X45mm NATO was adopted by the U.S. military in 1964 and by NATO in 1980. With bullet diameter of .224-inch, the original M193 military cartridge used a 55-grain bullet at 3250 fps; the current M855A1 cartridge, developed by FN, uses a 62.5-grain bullet at 3020 fps, offering greater range and better penetration. The civilian version of the 5.56X45mm is 223 Remington; the cartridges are dimensionally identical but military chamber dimensions and specifications for military brass are different. It is considered safe to use 223 Remington ammo in a 5.56X45MM NATO chamber, but not a good idea to use 5.56X45mm ammo in a rifle specifically chambered for the 223 Remington. Although the stopping power of .22-caliber bullets remains controversial the 5.56X45mm has served well in now multiple generations of M16 rifles.

Craig Boddington

Black Rain Ordnance Black Rain Ordnance Spec+ Fusion Rifle, 5.56 NATO, 16 in. Barrel, 30 rd., Bronze Battleworn finish $0.00 ● Out of stock FFL required

Black Rain Ordnance Black Rain Ordnance Spec+ Fusion Rifle, 5.56x45mm NATO, 16 in. Barrel, 30 rds, Tigers Eye Battleworn finish $0.00 ● Out of stock FFL required

FN America FN 15 SRP G2 Rifle 5.56 NATO 16" Barrel 30 Round Black Finish $0.00 ● Out of stock FFL required

Wilson Combat Wilson Combat Protector Carbine 5.56 NATO 16" Barrel 30 Round Black Finish $0.00 ● Out of stock FFL required

Black Rain Ordnance Black Rain Billet Rifle 5.56 NATO 16" Barrel 30 Round Flat Dark Earth Cerakote Finish $0.00 ● Out of stock FFL required

Rock River Arms RRA Car A4 Carbine 5.56MM Nato Rifle 16" Barrel Bbl 6 POS A2 Sight Black Finish $0.00 ● Out of stock FFL required

Rock River Arms RRA RRage 3g Rifle 5.56mm Nato 6 Position Stock 16" Barrel Black Synthetic Finish $0.00 ● Out of stock FFL required

Black Rain Ordnance Black Rain Fission Rifle 5.56 NATO 16" Barrel 30 Round Bronze Battleworn Cerakote Magpul Stock $0.00 ● Out of stock FFL required

Bushmaster Firearms Bushmaster QRC BFSIII Rifle 5.56 NATO 16" Barrel 30 Round Black Finish $0.00 ● Out of stock FFL required

American Tactical Imports ATI Mil-Sport Rifle 5.56 NATO 16" Barrel 30 Round Black Finish $0.00 ● Out of stock FFL required

FN America FNH USA Rifle FN-15 5.56mm NATO M4 Military Collector 16" Barrel 30 Round Mag Semi Automatic $0.00 ● Out of stock FFL required

Zastava Zastava Arms PAP M90 Semi-Auto Rifle 5.56x45mm 18.25" Barrel (1)-30Rd Mag Adjusable Sights Folding Magpul Zhukov Stock Blued Finish $0.00 ● Out of stock FFL required

Diamondback Firearms Diamondback DB15 Semi-Automatic Rifle 5.56mm NATO 16" Barrel (1)-30Rd Magazine Black Adjustable Magpul CTR Stock Multicam Camouflage Finish $0.00 ● Out of stock FFL required

CMMG, Inc CMMG Resolute MK4 Semi-Automatic Rifle 5.56mm NATO 16.1" Barrel (1)-30Rd Magazine CMMG Ripstock 6 Position Collapsible Stock Black Finish $0.00 ● Out of stock FFL required

Advanced Technology Intl. ATI Mil-Sport Semi-Automatic AR-15 Semi-Automatic Rifle 223 Remington/5.56 NATO 16" Barrel (1)-60Rd Magazine Rogers Super Stock Black Finish $0.00 ● Out of stock FFL required

Daniel Defense Daniel Defense DDM4 MK12 Semi-Automatic Rifle 5.56 NATO 18" Barrel (1)-32Rd Magazine Polymer Stock Black Finish $0.00 ● Out of stock FFL required

Daniel Defense Daniel Defense DDM4 V9 Semi-Automatic Rifle 5.56 NATO 16" Barrel (1)-32Rd Magazine Polymer Stock Black Finish $0.00 ● Out of stock FFL required

Radical Firearms Radical Firearms MK1 Mod 1 Patrol Semi-Automatic Rifle 5.56mm NATO 16" Barrel (1)-30Rd Magazine Iron Sights B5 Bravo Stock Black Anodized Finish $0.00 ● Out of stock FFL required

American Defense Mfg. American Defense Mfg. UIC Mod 1 Semi-Automatic Rifle 5.56mm NATO 14.5" Barrel (1)-30Rd Magazine Magpul MOE-SL Stock Black Anodized Finish $0.00 ● Out of stock FFL required

Ruger Ruger Mini-14 Ranch Semi-Automatic Rifle 5.56mm NATO 18.5" Barrel (1)-5Rd Magazine Black/Gray Chevron Laminate Stock Stainless Steel Finish $0.00 ● Out of stock FFL required

Stag Arms Stag Arms 15 Tactical Semi-Automatic Rifle 5.56x45mm NATO 16" Barrel (1)-30Rd Magazine Carbine Stock Black Finish $0.00 ● Out of stock FFL required

Kel-Tec Kel-Tec RDB Defender Semi-Automatic Rifle 5.56x45mm NATO 16.1" Barrel (1)-20Rd Magazine Collapsible Synthetic Stock Green Finish $0.00 ● Out of stock FFL required

CMMG, Inc CMMG MK4 Dissent Semi-Automatic Rifle 5.56mm NATO 16.1" Barrel (1)-30Rd Magazine Black Synthetic Stock Charcoal Green Cerakote Finish $0.00 ● Out of stock FFL required

CMMG, Inc CMMG MK4 Dissent Semi-Automatic Rifle 5.56mm NATO 16.1" Barrel (1)-30Rd Magazine Black Synthetic Stock Titanium Cerakote Finish $0.00 ● Out of stock FFL required

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