Description
The Knights Armament SR-15 E3 Carbine Mod2 is a premium, duty-ready AR-15 platform carbine chambered in 5.56 NATO/.223 Remington. It features a 14.5-inch chrome-lined barrel with a permanently attached muzzle device for a 16-inch legal overall length, a Magpul MOE stock, a free-float rail system, and ships with a 30-round magazine. This rifle is built for reliability and precision right out of the box, designed for the shooter who demands a no-compromise tool for serious use. Available at firearms-missouri.com for Missouri residents and nationwide.
Key Features
- E3 Bolt & Enhanced Upper: The proprietary E3 bolt system increases lug contact and material where it counts, enhancing durability and reliability under sustained fire.
- 14.5″ Chrome-Lined Barrel: A cold hammer-forged, chrome-lined barrel provides exceptional longevity and corrosion resistance. The pinned and welded muzzle device brings it to a non-NFA 16-inch length.
- Free-Float URX 4 Rail System: This monolithic-style rail provides a rigid, stable platform for optics, lasers, and grips, ensuring zero shift and improved accuracy.
- Magpul MOE Furniture: Features the proven Magpul MOE stock for a solid cheek weld and adjustable length of pull, paired with a MOE pistol grip for superior control.
- Fully Ambi Controls: Includes an ambidextrous safety selector and magazine release, making the rifle adaptable for left or right-handed shooters without modification.
Specifications & Details
| Caliber | 5.56 NATO / .223 Remington |
| Barrel Length | 14.5″ (16″ OAL w/ P&W) |
| Barrel Type | Chrome-Lined, Cold Hammer Forged |
| Stock | Magpul MOE |
| Handguard | KAC URX 4 Free-Float Rail |
| Magazine Capacity | 30 Rounds (1 included) |
Weighing in at approximately 6.8 pounds unloaded, the SR-15 Mod2 strikes a balance between maneuverability and stability. The heart of the system is the E3 bolt, which represents a significant engineering upgrade over standard mil-spec designs—it’s built to last tens of thousands of rounds. The rifle’s mid-length gas system is tuned for smooth, reliable operation with minimal felt recoil, whether you’re running standard M855 ball or heavier defensive loads. Look, when it comes to home defense or duty use, you need a rifle that works every single time, without question. This is that rifle.
Who This Rifle Is For
This carbine is for the serious end-user who views their primary rifle as a critical life-saving tool, not a range toy. It’s built for law enforcement officers, prepared civilians, and security professionals who require absolute reliability. If your scenario involves defending your family in a high-stress situation or needing a rifle that can perform in adverse conditions, the SR-15’s pedigree is unmatched. It’s also for the shooter who appreciates refined engineering and is willing to invest in a platform that requires no gunsmithing to be mission-ready. The price point of $2433.56 reflects its top-tier components and military-proven design.
Pros & Cons
Pros: Legendary Knights Armament reliability and durability. The enhanced E3 bolt system is a tangible improvement. The free-float rail is incredibly robust and offers vast accessory mounting real estate. The ambidextrous controls are a significant ergonomic advantage. It’s a complete, optimized system that fits out of the box.
Cons: The premium price is a barrier for some. Proprietary parts like the bolt and rail mean some standard AR-15 components are not directly interchangeable, though it remains compatible with most mil-spec triggers and lower parts. The 14.5-inch barrel, while maneuverable, sacrifices some velocity compared to a 16-inch or longer barrel.
Frequently Asked Questions
Q: Is the muzzle device permanently attached?
A: Yes. The muzzle device is pinned and welded to the 14.5-inch barrel, making the overall barrel length a legal 16 inches. This avoids the need for a National Firearms Act (NFA) tax stamp for a Short-Barreled Rifle (SBR).
Q: What types of optics and accessories mount to the rail?
A: The Knights Armament URX 4 rail uses a proprietary mounting system but includes multiple Picatinny rail sections. It is compatible with a vast array of standard accessories, including lights from SureFire or Streamlight, and optics from Aimpoint, EOTech, and Trijicon.
Q: Can I use standard AR-15 magazines?
A: Absolutely. The SR-15 Mod2 lower receiver is designed to work flawlessly with any standard USGI or PMAG 30-round magazine, giving you maximum flexibility for ammunition and magazine choices.
Ready to handle a rifle built to a higher standard? This Knights Armament SR-15 E3 Carbine Mod2 is in stock and ships to Missouri and compliant US states. Contact us to start the FFL transfer process.
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