The B5 Systems SRK1657 Sierra K is a compact, fixed carbine-length stock finished in Coyote Brown, built for mil-spec diameter buffer tubes on AR-platform rifles. Its low-profile synthetic design offers a lightweight, snag-free upgrade for SBR and PDW-style builds. Buffer tube not included.
Grips & Furniture
B5 Systems SRK1657 Sierra K Coyote Brown Synthetic Carbine Stock, Fits AR-Platform
$61.99
The B5 Systems SRK1657 Sierra K is a compact, fixed carbine-length stock finished in Coyote Brown, built for mil-spec diameter buffer tubes on AR-platform rifles.
Available on backorder
- ✔ Authorized dealer — factory-new, full manufacturer warranty
- ✔ Ships from California in 1–2 business days · free shipping over $199
- ✔ 30-day returns · secure checkout
- ✔ Bulk, LE & Gov pricing available — request a quote
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