This receiver extension is designed to work with Mil-Spec dimensioned M4/AR-15 type collapsible stocks. It also can be utilized as a replacement receiver extension for the AR-10 rifle.
Specifications
| Features | Six position receiver extension made from impact extruded 7075 T6 aluminum; Hard coat anodized; Positions are numbered and are visible through the witness hole on most stocks; Snag-free sliding of the buttstock |
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