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; Features a Mil-Spec diameter aluminum stock tube that is hard coat anodized (1.145 Diameter); Stock tube features waterproof storage compartment; Adds 7.375 inches to overall firearm length; Adds 0.75 inches to the firearm in the folded position