The Midwest Industries Side Folder with MI Stock Tube in Black features a heavy-duty side-folding mechanism constructed from 4140 steel. It includes a full-length locking lug for maximum strength and solid positive lock up in both positions. The steel clamp ensures large surface engagement and can be configured for right or left folding.This modular design accommodates different stock attachments and features a Mil-Spec diameter aluminum stock tube that is hard coat anodized (1.145 Diameter). Additionally, the stock tube is equipped with a waterproof storage compartment. It adds 7.375 inches to the overall firearm length and 0.75 inches when folded. The complete assembly weight is 13.5 oz, and all steel parts have a mag phosphate finish. The product is 100% made in the USA.