The B5 Systems Sierra K Extension Kit in black is an AR-15 accessory designed to upgrade your platform. This kit includes a receiver extension, buffer, and spring, providing the components needed for a complete installation.
AR Buffer System
B5 SYSTEMS SIERRA K EXTENSION – KIT BLACK
$128.95
B5 Systems Sierra K Extension Kit delivers a complete AR-15 receiver extension upgrade with buffer and spring included for immediate installation.
Availability: In stock
B5 Systems
| Weight | 1 lbs |
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| Dimensions | 6 × 2.5 × 2 in |
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