The Knight’s Armament SR-15 KS-1 13.7″ rifle is chambered in 5.56 NATO and features a 13.7-inch cold hammer forged barrel with a 1:7 twist rate designed to stabilize a wide range of projectile weights. The barrel is manufactured from 32CrMoV12-10 steel, incorporates a chrome-lined bore, and utilizes a dimpled heavy profile to balance durability and weight. The rifle weighs approximately 6.88 pounds and has an overall length of approximately 30.3″ to 33.5″ depending on stock position.
Specifications
- Caliber: 5.56 NATO
- Barrel Length: 13.7″ (34.8 cm)
- Barrel Material: 32CrMoV12-10 Steel
- Barrel Construction: Cold Hammer Forged
- Barrel Profile: Dimpled Heavy Profile
- Barrel Finish: Chrome Lined
- Twist Rate: 1:7″ Right-Hand
- Weight: Approx. 6.88 lbs











