Knights Armament 5.56MM SR-15 KS-4 16" Rifle System - 121442

Experience unparalleled reliability and precision with the Knights Armament 5.56mm SR-15 KS-4 16″ Rifle System, engineered for the discerning shooter who demands excellence in every shot. As a pinnacle of AR-15 design, this tactical rifle combines cutting-edge innovation with battle-proven performance, making it the ultimate choice for home defense, competitive shooting, or professional applications. Crafted by Knights Armament Company, renowned for military-grade firearms, the SR-15 KS-4 delivers smooth operation and exceptional accuracy, ensuring you stay in control whether suppressed or unsuppressed.

Key Features

• Cold Hammer-Forged Barrel: 16-inch lightweight profile in CrMoV with chrome lining and 1:7 twist rate for superior velocity, accuracy, and longevity—ideal for 5.56 NATO rounds, reducing wear during extended sessions.
• URX 6 M-LOK Handguard: 15-inch free-float rail system provides ample space for accessories while enhancing heat dissipation and barrel stability, allowing customized setups without compromising balance.
• E3 Enhanced Bolt Carrier Group: Patented multi-lobe design minimizes carrier speed and friction, boosting reliability in adverse conditions and extending component life—perfect for high-round-count scenarios.
• Ambidextrous Controls: Safety selector and magazine release for intuitive handling by left- or right-handed users, streamlining transitions in dynamic environments.
• Two-Stage Trigger: Crisp 4.5-5 lb pull offers precision for long-range shots and rapid follow-ups, enhancing overall control and confidence.

Specifications

• Caliber: 5.56mm NATO
• Action: Semi-Automatic
• Barrel Length: 16 inches
• Overall Length: 33.5–36.5 inches (adjustable stock)
• Weight: 6.6 lbs (unloaded)
• Finish: Black anodized
• Stock: Adjustable synthetic
• Magazine Capacity: 30 rounds (compatible with standard AR-15 magazines)
• Muzzle Device: A2 flash hider

Why Choose the SR-15 KS-4?

In a market flooded with AR-15 variants, the Knights Armament SR-15 KS-4 stands out by addressing common pain points like jamming under stress or inconsistent grouping. Its advanced gas system and proprietary components ensure flawless cycling across environmental extremes, from dusty ranges to humid fields, saving you time on maintenance and frustration during critical moments. Shooters praise its buttery-smooth recoil impulse and sub-MOA potential with quality ammo, turning every outing into a testament to superior engineering. Whether you’re upgrading your collection or seeking a duty-ready platform, this rifle’s robust construction and modular design future-proof your investment.

Elevate your shooting experience today—secure the Knights Armament SR-15 KS-4 16″ Rifle System and join the ranks of professionals who trust KAC for uncompromising performance.

Frequently Asked Questions

Q: What makes the E3 bolt carrier unique?
A: The E3 BCG features a rounded design that reduces contact points with the carrier, lowering operating speed and enhancing durability while maintaining compatibility with standard AR-15 parts.

Q: Is this rifle suitable for suppressor use?
A: Yes, the SR-15 KS-4 is optimized for both suppressed and unsuppressed firing, with its adjustable gas system allowing seamless adaptation to minimize gas blowback.

Q: Does it comply with state regulations like California’s?
A: Compliance varies by state; this model includes a fixed magazine option but consult local laws for specifics, as it’s not inherently CA-compliant out of the box.