Phase 5 Tactical Carbine Mini Stock Kit - UMS and HexOne

Manufactured by Phase 5 Tactical
Manufactured by Phase 5 Tactical
1 Review

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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The Phase 5 Tactical Carbine Mini Stock Kit features the HexOne buffer tube and the UMS Universal Mini Stock for a compact fixed stock set up. This minimalist design is extremely durable and lightweight great for SBR builds. The UMS is precision machined from 6061-T6 aluminum and is compatible with most Mil-Spec buffer tubes buffer tubes. The rounded design of the buttstock allows for better ergonomics when shouldering your weapon whether you are wearing a plate carrier or not. The HexOne carbine length buffer tube is machined from 7075-T7 aluminum with a thick hexagonal shape that increases strength and rigidity. Can be used for rifle calibers like .300 BLK, 5.56 up to .308 and even pistol calibers like 9mm or .45 ACP. However, this kit includes a carbine buffer and recoil spring designed for 5.56 ammo as well as an end plate and castle nut for installation. The Phase 5 Carbine Mini Stock Assembly is what you need for your next PDW build.

  • HexOne carbine length buffer tube – 7075-T7 aluminum
  • Hexagonal shape increases strength
  • UMS – 6061-T6 aluminum
  • UMS is compatible with other Mil-Spec buffer tubes
  • Black anodized finishes
  • Includes carbine buffer, recoil spring, castle nut, and end plate
  • Made in the U.S from U.S sourced materials

Phase 5 builds the best equipment possible for dedicated professionals. Their components are designed to solve problems and help those who protect and defend us, using the best equipment possible. Every part and weapon they build is made in the U.S.A.
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BrandPhase 5 Tactical
MaterialAluminum - 6061-T6
Sling MountNon-Mount
StorageNot Storage Capable
Weight18 oz.
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

1 review

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Expensive, but worth it

by -

This is an amazing little stock. I needed something for my CQC SBR that would offer very short LOP, something that would get my nose up against the charging handle, and that could be shouldered and transitioned as quickly as possible. I also needed something lightweight and stable, that could take some punishment. Enter the Phase 5 mini stock kit. This does exactly what I needed it to do, and it does it in style. Yes, it seems over priced, but once you install and use it, I think you'll agree that it's worth it. Strong, lightweight, and it puts the rifle deep into my shoulder. If you need something that will allow you to be as quick as possible with your rifle, this can't be beat.