The B5 Systems Sierra K Receiver Extension, Fits B5 Systems Sierra Extension, Flat Dark Earth is a stock / buffer component for AR Rifles.
The Sierra K is a purpose-driven compact stock, optimized for use on PDW and compact weapon systems. Features include reduced overall size and slim cheek profile, snag-free adjustment lever, limited rotation QD and integral fixed sling mounts, internal tensioners, and anti-slip buttpad. Mounts via shortened compact Mil-Spec receiver extension.
Specifications
- Brand: B5 Systems
- Fits: AR Rifles
- Color: Flat Dark Earth
- Manufacturer Part #: SRK-1656
- UPC: 814927024755
