The Sierra K Receiver Extension Kit is the proprietary mounting system for the Sierra K Buttstock. It consists of a reduced-length, mil-spec diameter, 7075 aluminum, 5-position receiver extension, a short heavy buffer (3.5 oz), extra power spring, castle nut, and quick disconnect end plate.
B5 SRK-1660 SRK EXTENTION KIT BLK
SKU: ss_180993
UPC:
B5 SRK-1660 SRK EXTENTION KIT BLK
$91.77
Availability: 22 in stock
| Manufacturer | B5 Systems |
|---|---|
| Material | aluminum |
| Model | |
| Product Type |
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