Aluminium 7075 material, finished in hard black anodise. Well weighted release spring. - Weight 65g / 2.3oz. - Longer release leaver, for simple and rapid mag changes (longer by approx 8mm (5/16")). - Larger trigger guard for shooting with a glove, and wider trigger guard as a possible support. - Heavily chamfered mag port entry for speed of inserting the magazine, and direct feed ramp from front of trigger guard. - Wider trigger entry slot for wider aftermarket triggers levers. - Comes with new front and rear steel BLACK button head hex head take-down bolts. Tension to 6Nm, 4.5 ft-lbs, 54 in-lbs.