AR-15s and AR-10s do not have a folding stock. This is because the action needs to go into the buffer tube which is part of the stock of these weapons. Some have made folding stocks for the AR-15, but you cannot shoot the weapon with the stock folded.
The XCR’s action is completely contained inside its upper receiver so the stock can fold and still be fired while folded. We offer two different patented folding stocks – the FAST2 and FAST3. FAST stands for Fully-Adjustable Stock because they are adjustable for length and height. The cheek rest is adjustable, and the stock can be bolted on the stock’s hinge at different heights.
Additionally, we offer a Picatinny rail adapter which can house many different folding and non-folding stocks at different heights. We also offer AR-15 Stock Adapters for those who simply must have an AR-15 or M4 Type Stock.