Phase 5 // Rifle Mini Stock Assembly (RMSA)

Rifle Mini Stock Assembly (RMSA)

Build your own stock with color options!

Add each of the below components to your cart and select your color choice for the UMS stock. Price will automatically update in your cart.

Buffer Tube (HexOne-R-Tube)

A2 Rifle Buffer (Buffer-Rifle)

A2 Rifle Length Buffer Spring (RBS)

Universal Mini Stock (UMS)


Product Description:

The Phase 5™ Rifle Mini Stock Assembly (RMSA) is a combo kit featuring our Universal Mini Stock (UMS) mounted on our HexOne Rifle Length buffer tube (HexOne-R). This pair is an excellent fixed stock solution. The UMS and HexOne-R are precision machined in house from USA sourced raw billet aluminum. The HexOne-R buffer tube is cut from 7075-T7 and the UMS is 6061-T6. The HexOne buffer tube features a hexagonal design that is much thicker and rugged than a mil-spec receiver extension tube. The UMS offers a smaller footprint and bottom curve which makes for a far superior anchor of the stock on the chest, and this allows an operator to get in and out of position with greater ease. The HexOne and UMS undergo a rugged tumbling process that further strengthens the exterior of the parts while leaving the surfaces smooth and snag free.

Prop 65 Warning

In stock
Item Price: $135.00
Overall Length:
10.5 Inches
Assembled Weight:
1.4 lbs
Made in the U.S.A.

Heavy duty fixed mini stock assembly.


Proudly made in the U.S., from U.S. sourced raw billet aluminum, on U.S. manufactured machines.


Rifle length buffer tube that accepts any end plate sling mount