The B.R.E. Samson Bufferless Receiver Extension is equipped with a picatinny folding stock adapter. This exceptional product is a 6-position, adjustable carbine buffer tube, specially conceived to marry flawlessly with mil-spec AR-15 carbine stocks. Its folding mechanism can effortlessly be detached and reattached, providing the convenience of a right side fold. This versatile extension can be attached to various buffer less setups, including the popular models like Brownell\'s BRN-180, Sig Sauer MCX, and Sig Sauer MPX. It is important to note, however, that the stock is not included in the purchase.