Rock River Arms

Rock River Arms LAR-15M Operator ETR Carbine Semi-Automatic Tactical Rifle 5.56x45mm NATO 16" Chrome Lined Barrel (1)-30Rd Magazine Black Hogue Rubber Beavertail Grips RRA 6 Position NSP-2 Synthetic Stock Finish

Item #11514656 MPN OP1500 UPC 842834125876

Caliber 5.56mm NATO

Capacity 30

Barrel Length 16"

Frame Finish Black

Grip Finish Synthetic

Condition New

Manufacturer

Name Rock River Arms

Website http://www.rockriverarms.com

Address 1042 Cleveland Rd , Colona, IL 61241

Rock River Arms LAR-15M Operator ETR Carbine Semi-Automatic Tactical Rifle 5.56x45mm NATO

16" Chrome Lined Barrel (1)-30Rd Magazine Black Hogue Rubber Beavertail Grips RRA 6 Position NSP-2 Carbine Synthetic Stock Black Finish

The LAR-15M Operator ETR Carbine is a 16" 5.56 rifle with a 13" lightweight M-Lok handgaurd, featuring an extended charging handle. Includes Case

Brand Rock River Arms

Category Tactical Rifles

Series Operator ETR Carbine

Caliber 5.56x45mm NATO

Barrel Length Range 16" to 16.99"

Model LAR-15M

Stock Finish Group Black

Capacity 30+1

Stock Material Synthetic

Action Semi-Auto

Oal 33"

Hand Right

Sights Optic Ready

Barrel Finish Black

Muzzle A2 Flash Hider

Twist 1:9"

Gun Platform AR-Style

Magazine Type AR-15

Grips Black Hogue Rubber Beavertail

Handguards 13" M-LOK Free-Float

Includes Carrying Case

Receiver Material Aluminum

Safety Safety Selector Switch

Thread Pattern 1 / 2"-28 tpi

Stock Description RRA 6 Position NSP-2 Carbine

Barrel Description 16" Chrome Lined

Barrel Length 16"

Max Capacity 30

Receiver Finish Black

Trigger Two-Stage Match

Weight 6.40 lbs

Stock Finish Black

The information below comes from our Gun Caliber Dictionary and is for general reference only. It does not describe the specifications of this particular item.

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

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