California Access Notice

Are you 18 years old or older?

California restricts viewing this site to those over 18.

No
FFL-compliant checkout Live inventory verification Pickup / transfer ready
(310) 275-7272 beverlyhillsguns.com
Catalog
0

Your cart is empty

Total $0.00
Sign In Create Account
Browse Beverly Hills Guns
Navigate by category, brand, and customer workflow.
Store & Compliance
Support firearm-compliant checkout, store pickup, FFL transfers, and inventory-aware merchandising in one shell.
  • Live inventory validation before checkout
  • FFL-aware firearm fulfillment
  • California restriction messaging
  • Mobile-first browse and search flows
Search Beverly Hills Guns
Search by manufacturer, model, UPC, or SKU.
B5 SIERRA K STOCK COYOTE
Thumbnail 1 Thumbnail 2 Thumbnail 3
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Grips/Pads/Stocks
B5 Systems

Sierra K

$61.00
In Stock CA Compliant

B5 Systems Sierra K Receiver Extension, Fits B5 Systems Sierra Extension, Coyote SRK-1657

Key Details
UPC 814927024762
Part Number SRK-1657
RSR Stock # B5SRK-1657
Manufacturer B5 Systems
Already have an account from an in-store purchase? Log in and we will connect your online activity to it.
Continue Shopping
Live Distributor Check
Checking RSR live availability and restriction status...
Purchase Requirements
  • Final availability is confirmed against the distributor during cart and checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

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.

Features
  • Low-Profile Adjustment Latch
  • Color-Matched Steel Hardware
  • Mil-Spec Materials and Finishes
  • Mounts via Sierra K Receiver Extension Kit
Specifications
UPC: 814927024762
Manufacturer: B5 Systems
Manufacturer Part #: SRK-1657
Model: Sierra K
Type: Stock