The Knight’s SR-15 Mod 2 line represents the pinnacle of firearms based upon the Eugene Stoner designed operating system. The Mod 2 update introduces several notable features to the SR-15 IWS line. The chrome lined 5.56mm NATO barrel features a proprietary mid-length gas system that increases reliability and durability while also reducing felt recoil. The Mod 2 gas system minimizes the chances of gas leakage and ensures more consistent operation in harsh conditions. The new gas block is secured with a locking ring instead of taper pins, which increases barrel rigidity and eliminates the need to custom fit the gas block to the barrel. A URX 4 handguard with Keymod accessory mounting points for ancillary device attachments, increases cooling characteristics and reduces weight and bulk compared to standard M1913 rail attachment methods. Standard features also include the improved E3 round-lug bolt design which both enhances function and increases bolt life far beyond the industry standard and folding 200m-600m micro sights, round out the package to deliver a cutting-edge performance right out of the box.