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: SA1366951
UPC: 814927024793
B5 SRK-1660 SRK EXTENTION KIT BLK
$128.25
Availability: 19 in stock
| Weight | 0.775 lbs |
|---|---|
| Dimensions | 10.6 × 6.9 × 1.7 in |
| Manufacturer | B5 Systems |
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