The Samson B.R.E. Bufferless Folding Receiver Extension is a versatile and innovative solution for firearm enthusiasts seeking adaptability and durability. Crafted from high-quality 6061 T6 aluminum this 6-position adjustable carbine buffer tube is designed to work seamlessly with mil-spec AR-15 carbine stocks. Its integrated picatinny folding stock adapter adds convenience and flexibility allowing the folding mechanism to be removed and reattached for a right-side fold. Perfectly compatible with bufferless setups like the Brownell's BRN-180 Sig Sauer MCX and Sig Sauer MPX this receiver extension offers unmatched performance and reliability. Please note the stock is not included.