About this stock
B5 Systems Sierra K Receiver Extension, Fits B5 Systems Sierra Extension, Olive Drab Green is a stock for AR rifles.
Match it to your receiver or buffer tube: AR stocks are mil-spec or commercial diameter, and rifle stocks are made for a specific action and barrel contour. Compare the fit details below with your firearm.
Manufacturer details
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
- Compatibility: AR Rifles
- Color: Olive Drab Green
- Manufacturer Part #: SRK-1658
- UPC: 814927024779
Buying from WBT Guns
- Delivery: Ships to your door anywhere in the United States, or pick it up free at our La Mesa store.
- Payment: Pay in full or finance with Credova.
- Questions: Fitment or compatibility questions? Call (619) 667-9453 or email sales@wbtguns.com. FAQ
WBT Guns is family-owned in La Mesa, California, and has served shooters since 2012.
A note on accuracy. Specifications, fitment and images come from the manufacturer and can contain errors or change without notice. If a detail matters to your purchase, call us and we will confirm it before you order. Any compliance notes are general information, not legal advice; California and local laws change, and the rules that apply depend on the firearm the part goes on.
