Mi Side Folding Fixed EXTRUDED Stock Heavy-duty side-folding mechanism constructed from 4140 heat treated 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 Features 5 QD sling attachments Stock is made from Hard Coat Anodized 6061 Aluminum Extremely rigid triangular design Curved top surface for a comfortable cheek weld Adds 9.0" to overall firearm length Adds 0.75" to the length of the firearm in the folded position Complete assembly weight: 15.5 oz. Steel parts are mag phosphate finished