Samson B.R.E. Receiver Extension with Folding Picatinny Adapter

The Samson B.R.E. Receiver Extension with Folding Picatinny Adapter is a mil-spec AR-15 buffer tube engineered for shooters who need a compact, versatile platform. Built as a bufferless receiver extension, the B.R.E. pairs with standard adjustable carbine stocks and adds a folding Picatinny adapter—letting you collapse your setup for transport, storage, or crowded shooting positions without compromising the ability to switch back to traditional stock placement. Whether you're building a truck gun, setting up a home-defense carbine, or configuring a rifle for overlanding and field use, this tube gives you options.

The 6-position adjustability lets you dial in the perfect length of pull for your shooting style and gear load, and the folding mechanism can be removed and reattached, giving you control over which side the stock folds toward. The ramp design eases installation of standard AR-15 stocks, cutting down the frustration of tight fitment. This is purpose-built for shooters who want modularity and practicality without factory limitations.

Compatible with mil-spec AR-15 adjustable carbine stocks (stock sold separately). A solid foundation for any build that prioritizes adaptation and field function.

Key Features

• Mil-spec AR-15 compatibility—works with standard adjustable carbine stocks
• 6-position length-of-pull adjustment for custom fit
• Folding Picatinny adapter with removable, reattachable design for configuration flexibility
• Ramp geometry for easy, reliable stock installation
• Bufferless design reduces overall system complexity

Frequently Asked Questions

Is this compatible with mil-spec AR-15 stocks?

Yes. The B.R.E. Receiver Extension is designed to work seamlessly with standard adjustable carbine stocks that fit mil-spec buffer tubes. Your stock is not included and must be purchased separately.

Can I adjust the length of pull?

Yes. The extension features 6-position adjustability, allowing you to customize the stock's reach for your body size, shooting position, and gear configuration.

Which side does the stock fold toward?

The folding mechanism can be removed and reattached, giving you the flexibility to configure it for right-side or left-side folding based on your needs.

What does "bufferless" mean?

A bufferless receiver extension eliminates the buffer and spring system, simplifying the bolt carrier assembly and reducing overall system weight and complexity while maintaining function with mil-spec components.