Upper Receiver: Fully CNC machined from 7075-T6 billet aluminum for extreme precision and enhanced durability. Flat top picatinny design for versatility in mounting optics and other enhanced components. CNC engraved numbered rail system. Lead Star’s truss system design reinforces key areas for increased strength without added weight. M4 feed ramps for added reliability. Lower Receiver: Includes our integrated feed ramp for reliable feeding including hollow points! Integrated and reliable LRBHO (last round bolt hold-open) for AR-15 bolt release functionality in an AR-9. LRBHO is easily removed with 3 screws for competition shooters. Use with Lead Star Arms bolt carrier groups, these were tested during development and proven to work reliably for the last round bolt hold-open function. Fully CNC machined from 7075-T6 billet aluminum for extreme precision and enhanced durability. Lead Star’s truss system design reinforces key areas for increased strength without added weight. Front magwell grip surface designed for the operator to grip and maintain weapon control even in the most extreme conditions. Tension device to increase rigidity between upper and lower receivers. Built-in trigger guard eliminates the need for a flip-down trigger guard. Designed to be compatible with MIL-spec upper receivers so it can be used if necessary but lines will not match. 11" Handguard: Ultra lightweight slim profile designed for duty use. CNC machined 6061-T6 aluminum. Unique design offers ultra capture around the barrel nut eliminating the requirement for anti-rotation tabs. Eliminates harmonics from attached accessories, greatly improving weapon accuracy. 4 slot picatinny CNC engraved rail at the 12 o’clock position. 2 M-LOK slots at the 3 and 9 o’clock positions, and full-length M-LOK at the 6 o’clock position for mounting only the picatinny rail needed or accessories. Fire Control Group: Enhanced HiperfireA(R) Elite trigger. Curved trigger with a crisp, clean break. Very short over travel with a very positive reset. Barrel: 4150 QPQ lightweight profile 10.5" barrel. 1:10 Twist. Bolt Carrier Group: Enhanced 8620 steel bolt, with an enhanced firing pin and external 5.56 style ejector. Uniquely finished with a Salt Bath Black Nitride and utilizing an M16 style extractor, this bolt is designed for superior performance and durability. Has coil spring retaining pin ideally used for skeletonized receivers. Removable weight for different recoil systems making it compatible with captured spring buffer systems. Finish: Type III Class 2 hard coat anodized. Gas System: Blowback for reliability. Muzzle Device: Enhanced linear compensator greatly mitigates concussion by effectively capturing and redirecting gasses away from the shooter. Buffer System: Blitzkrieg Components / KynSHOT Hydraulic Buffer. Optimized so that it runs reliably, softens recoil, smooths out the action, and stops just behind the bolt catch. Grip: Barrage Grip. Black with reinforced impact-resistant polymer that provides maximum comfort and weapon control in all conditions. Brace: SB Tactical SBA3 pistol brace. Magazine: Comes standard with 1 ETS 33 round 9mm magazine
