The B.R.E, Samson bufferless receiver extension with a Picatinny folding stock adapter is a versatile, 6 position adjustable carbine receiver extension. Designed for seamless compatibility with Mil Spec AR-15 stocks, it easily attaches to the Brownells BRN-180, Sig Sauer MCX, Sig Sauer MPX and other bufferless platforms, enhancing adaptability and performance. Compatible with Mil-Spec AR-15 adjustable carbine stocks for a secure and versatile fit 6-position adjustable for customizable length of pull and improved shooting comfort The folding mechanism can be removed and reattached for a right side fold Ramp design to significantly improve the ease of installing the AR-15 stock for a smoother and quicker setup Skeletonized to reduce weight and enhance aesthetics, because it looks cool Designed, manufactured and finished in Keene, New Hampshire, USA for superior quality and craftsmanship