Knight’s Armament SR-15 E3 IWS MOD 2 5.56 NATO Semi-Automatic Rifle – Factory Bronze/FDE, 16 in CHF Barrel, Fully Ambidextrous Controls
This SR-15 E3 Improved Weapon System MOD 2 combines Knight’s Armament’s combat-proven engineering with a less common factory Bronze/FDE finish. A cold-hammer-forged, chrome-lined 16 inch barrel, proprietary E3 round-lug bolt, and fully ambidextrous lower make it a feature-rich rifle for users who value reliability and modern ergonomics straight from the factory.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: Minor superficial scratches and blemishes are present on the exterior surfaces; the bore remains clean and shiny.
What’s Included
- Factory Knight’s Armament hard rifle case
- 3× 30-round magazines (2 Magpul PMAG polymer, 1 aluminum USGI-pattern)
- Black 2-point adjustable sling
- Magwell-style chamber lock
The heart of this rifle is Knight’s proprietary E3 bolt, featuring rounded lugs and dual extractor springs that reduce stress and enhance service life. Mated to a direct-impingement, intermediate-length gas system, the rifle is tuned for smooth cycling and compatibility with KAC QDC suppressors.
A 16 inch Mil-B-11595E steel barrel is cold-hammer-forged, chrome-lined, and threaded 1/2-28 TPI. The factory QDC flash eliminator comes installed, ready for quick attachment of Knight’s suppressors or other muzzle devices.
The URX-4 free-float aluminum handguard provides 14.5 inches of KeyMod interface and integral QD sling sockets. A BCM foregrip and a KAC KeyMod-to-Picatinny adapter arrive installed, offering instant accessory placement and control.
Fully ambidextrous lower controls—including bolt release, magazine release, and safety selector—pair with a two-stage, 4.5 lb KAC match trigger for consistent, precise fire control. Folding Knight’s Micro front and 200–600 m rear sights give durable, low-profile back-ups.
The rifle’s Bronze/FDE anodized 7075-T6 receivers are matched to a black LMT SOPMOD six-position collapsible stock, blending rugged construction with modular comfort. The serial prefix “KM” denotes a commercial production run.