1913 Rear Housing:

Is Compatible with Gen 1 & Gen 2 MCK's. 

Gives The Ability To Add Your Own:

• Stock
• Stabilizer
• 1913 Foldable Buffer Tube
• Skeletonized Tube
• Skeletonized Stocks (NFA)
• 1913 Triangle Stock
• 1913 Stock Adapted
• 1913 ST-6 Stock Adapted
• and more

The B.R.E. — Bufferless Receiver Extension with Picatinny Folding Stock Adapter:

This 6-position adjustable carbine receiver extension integrates effortlessly with mil-spec AR-15 stocks, making it an ideal addition for bufferless platforms.

Compatibility:
Attaches to Brownells BRN-180®, Sig Sauer MCX, Sig Sauer MPX, and other bufferless systems.

Features:

• Compatible with mil-spec AR-15 adjustable carbine stocks
• 6-position adjustability
• Removable and reattachable folding mechanism for right-side folding
• Ramp for easy AR-15 stock installation
• Skeletonized design for reduced weight and a sleek look
• Proudly designed, manufactured, and finished in Keene, New Hampshire, USA

Specifications:

• Material: 6061-T6 Aluminum
• Finish: MIL-A-8625 Type III Class 2 anodizing

Dimensions:

• Length: 6.36” (extension only); 7.25” (overall with folding adapter)
• Width: 0.9”
• Height: 1.44”
• Weight: 10.2 oz