Strike Industries Polymer FSA Picatinny Folding Adapter with Stabilizer

Strike Industries built the Polymer FSA around a Picatinny interface, so it bolts to a rear 1913 rail rather than one specific receiver, and folds to the side for storage or transport. The side button release sits where the firing hand can reach it, and the adjustment lever handles length changes without tools or loose hardware.

This version comes with the Picatinny folding arm stabilizer, plus a T25 wrench and thread locker for installation. Polymer construction keeps the weight down on a braced build, where anything hung off the back of the receiver gets felt in how the gun balances.