Heavy-duty side-folding mechanism constructed from 4140 steel - Full-length locking lug for maximum strength - Solid positive lock up in both positions - Steel clamp with large surface engagement - Can be configured to right or left folding - Modular design can accommodate different stock attachments - Allows attachment of Mil-Spec buffer tube - Adds 2.5 inches to firearm length in the open position - Adds 0.75 inches to firearm length in the folded position - Complete assembly weight: 8.4 oz. - Steel parts are mag phosphate finished - 100% made in the USA