The Knight's Armament SR-15 KS-1 5.56 NATO 13.7" Rifle System is a refined AR-15 platform built around a heavy-profile, ball-mill dimpled cold hammer-forged barrel and a slim URX6 M-LOK handguard. Its mid-length gas system, chrome-lined bore, and E3.2 enhanced bolt work together to deliver smooth cycling, long service life, and consistent accuracy, whether run suppressed or unsuppressed. Fully ambidextrous controls, flip-up KAC micro sights, and an adjustable polymer stock round out a carbine designed for serious shooters who value reliability and control.

This 13.7" SR-15 KS-1 excels as a versatile rifle for range work, training, and general-purpose defensive use, offering a compact overall length without sacrificing ballistic performance. The adjustable stock and ergonomic A2-style grip support comfortable shooting from a variety of positions, while the 30-round detachable magazine keeps you on the line longer between reloads. Backed by Knight's Armament’s reputation for meticulous engineering and premium craftsmanship, the KS-1 is built to perform over high round counts and demanding conditions.

Key Features:

• Manufacturer: Knight's Armament
• Model: SR-15 KS-1
• Caliber: 5.56 NATO
• Condition: New
• Action: Semi-Auto
• Barrel Length: 13.7"
• Number of Magazines: 1
• Capacity: 30+1
• Unique Features: Heavy ball-mill dimpled cold hammer-forged barrel, mid-length gas system, URX6 M-LOK handguard, E3.2 enhanced bolt, KAC micro flip-up sights
• What's In The Box: Rifle, 30-round magazine, cable lock, owner’s manual
• Weight: 6.88 lbs
• Length: 32.2"–34.2"