B5 SRK-1660 SRK EXTENTION KIT BLK
by B5 Systems
Original price
$128.95
-
Original price
$128.95
Original price
$128.95
$128.95
-
$128.95
Current price
$128.95
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.