Product Description The Samson B.R.E. (Bufferless Receiver Extension) with Picatinny folding stock adapter is a 6-position adjustable carbine receiver extension designed to seamlessly integrate with mil-spec AR-15 adjustable carbine stocks. Built for bufferless setups, it is designed to attach to the Brownells BRN-180, Sig Sauer MCX, Sig Sauer MPX, and other compatible platforms. The folding mechanism can be removed and reattached to enable a right-side fold, and an integrated ramp helps improve ease of installing an AR-15 stock. Stock not included. Product Highlights Bufferless receiver extension with Picatinny folding stock adapter for compact storage and transport Compatible with mil-spec AR-15 adjustable carbine stocks (stock not included) 6-position adjustable carbine receiver extension for a tailored length-of-pull Reconfigurable folding mechanism can be removed and reattached for right-side folding Integrated ramp helps drastically improve ease of installing an AR-15 stock Specs Brand Name: Samson Manufacturing Corp. Product Type: Bufferless receiver extension with folding adapter Adjustment Positions: 6 Compatibility: Mil-spec AR-15 adjustable carbine stocks; designed for bufferless setups (e.g., BRN-180, Sig Sauer MCX/MPX) Folding Interface: Picatinny Color/Finish: Flat Dark Earth (FDE) Included: Receiver extension and folding adapter (stock not included) MPN: 04-06143-32 UPC: 850059556337 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.