Description
The UTG Pro RBUS3BM OPS Ready S3 Mil-Spec Stock Kit is a heavy-duty, drop-in buttstock assembly purpose-built for AR-15 and M16 pattern rifles. Proudly designed and made in the USA, the S3 is built around a polymer stock body mated to a mil-spec aluminum receiver extension tube, giving shooters a lightweight yet rugged upgrade for carbine, rifle, and pistol-length AR platforms.
The S3 stock features a 6-position adjustable length-of-pull and a unique sub-compact 6.05″ profile that keeps the rear of the rifle close to the shooter for improved handling. The compact design complements UTG Pro’s Super Slim handguard lineup for a clean overall build.
Manufactured to tight tolerance controls for a secure fit, this complete kit ships ready to install on any mil-spec AR-15 or M16 receiver extension. Included in the box:
- Polymer OPS Ready S3 buttstock
- Mil-spec 6-position aluminum receiver extension tube
- Buffer
- Buffer spring
- Tear-drop receiver ring
- Castle nut
Finished in black, the OPS Ready S3 is a turnkey replacement or upgrade stock for any mil-spec AR-15 or M16 carbine.
