Ruger AR-556 Semi Automatic Rifle 5.56 NATO 16.1" Barrel 10 Round Black
Ruger's AR-556 semi-automatic rifle is made from forged aerospace-grade 7075-T6 aluminum. The hard coat anodized, flattop upper receiver includes a forward assist, dust cover and brass deflector, while the handguards are made from heat-resistant glass-filled nylon. It has a carbine-length, milled gas block with multiple attachment points for a QD socket, bayonet lug, and sling. Serrations on the angled face of the gas block provides a low-glare surface. It also has a bolt machined from 9310 alloy steel, single-stage trigger, chrome-plated bolt carrier with a matte black oxide finish on the exterior, and patent-pending barrel nut and Delta ring for one person handguard removal and installation.
Brand Ruger
Category Tactical Rifles
Caliber 223 Rem / 5.56 NATO
Model AR-556
Stock Finish Black
Action Semi-Automatic
Sights None, Optic Ready
Capacity 10+1
Muzzle A2 Flash Hider
Hand Right
Handguards Free-Floating
Length of Pull 10.25"-13.5"
Metal Finish Black Hardcoat Anodized
Oal 32.25"-35.5"
Receiver Material 7075 T6 Aluminum Forged
Safety Safety Selector Switch
Stock Description 6-Position Collapsible
Stock Finish Group Black
Stock Material Polymer
Thread Pattern 1 / 2"-28 tpi
Trigger Mil-Spec
Twist 1:8"
Weight 6.7 lbs
Barrel Description Cold Hammer-Forged Steel
Barrel Length 16.1"
Caliber Dictionary
The Below Information Has Been Provided From Our Gun Caliber Dictionary And Is Meant For Informational Purposes Only. It Is Not Intended to Describe The Unique Specifications For This Ammunition.
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
