Strike Industries FSA Dual Folder 1913 Picatinny Rail Mount Rifle Stock - Black - The Strike Dual Folding Adapter is the first-in-market patented system that has an intuitive unfolding system for a Picatinny interface. The Strike Dual Folding Adapter folds left or right anytime without flipping or reconfiguring the hinge. At any moment, the user can fold to the left or right side of their weapon. When moved into the folded position, there is a positive lock so the Strike Dual Folding Adapter remains folded. A simple pull up on the bar near the hinge and back for quick deployment when folded. A 3-degree down tilt angle is added to help prevent interference with the weapons ejection port when folded to the right side. The Strike Dual Folding Adapter mounts directly to a 1913 Picatinny interface with two (x2) built-in locking lugs for a secure attachment. For the stock rear piece, included is a rear rubber anti-slip buttpad to create the best possible shoulder weld for rifle or registered Short-Barrel Rifle (SBR) setups. A single QD point is located on the rear of the stabilizer and ambidextrous QD sling mounting points for the stock. The Strike Dual Folding Adapter is constructed with a steel hinge and 6061-T6 Aluminum base, adapter & strut. Get a unique modular system with interchangeable (sold separately) parts like optional cheek riser (to be only used legally with stock setup), strut lengths and other accessories. Use with almost any 1913 Picatinny rear end or many factory OEM weapons with a Picatinny rail section in place of the traditional AR buffer tube threads. The Strike Dual Folding Adapter is a one of a kind adapter that gives you more options than anything on the market for those who want a truly modular folder that is under 10 ounces. NOTE: -Pressing buttons simultaneously will remove bar from hinge. -Lubrication of hinge and button components needed for routine maintenance.