Ruger SR-556 5.56mm NATO Two-Stage Piston Autoloading Rifle

Firearm Specifications,Caliber: 5.56mm NATO / 223 Rem.
Stock: Black Synthetic Collapsible
Finish: Manganese Phosphate / Hardcoat Anodized
Sights: Folding Back-up Iron Sights
Height: 7.75 in.
Barrel Length: 16.12 in.
Overall Length: 32.75 – 36.00 in.
Width: 2.50 in.
Weight: 7.94 lbs.
Twist: 1:9 RH
Grooves: 6
Length of Pull: 10.25 – 13.50
Capacity: 30