B5 Systems Sierra K Receiver Extension Black

Overview

B5 Systems Sierra K Extension Features This extension is built from high-grade aluminum for optimal strength-to-weight performance and is precision-machined to ensure a proper fit with the Sierra K stock. The sleek profile reduces unnecessary bulk making it ideal for compact builds where weight and form factor matter. Finished in matte black it resists corrosion and wear ensuring lasting durability in both range and field environments. B5 Systems Sierra K Receiver Extension Specifications Manufacturer: B5 Systems Model: Sierra K Receiver Extension Fit: B5 Systems Sierra K Stock Color: Black Material: High-grade aluminum Finish: Hardcoat anodized Application: AR-15 rifles and pistols using Sierra K configuration