B5 SRK-1660 SRK EXTENTION KIT BLK
B5 Systems
$128.25
$135.00
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B5 Systems
B5 SRK-1660 SRK EXTENTION KIT BLK
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.
- Manufacturer:
- B5 Systems
- Manufacturer Part Number:
- SRK1660
- Color:
- Black
- Make:
- AR-15
- Make/Model:
- AR-15
- Model:
- Sierra K
- Product Type:
- Buffer Tube Complete Assembly
- Style:
- Mil-Spec
- Subcategory:
- Stocks & Buffer Tubes
