Phase 5 Mini Stock Assembly – AR-15 Carbine Tube

The Phase 5 Carbine Mini Stock Assembly (CMSA) is a compact fixed-stock kit designed for AR-platform builds where a smaller footprint and positive shoulder purchase are desired. The kit pairs Phase 5’s Universal Mini Stock (UMS) with the HexOne buffer tube and is precision machined from USA-sourced billet aluminum. The result is a durable, low-profile stock assembly optimized for compact carbine configurations.

Key Specifications

• The kit is a Mini Stock Assembly that pairs the Universal Mini Stock with the HexOne buffer tube.
• Manufacturer is Phase 5.
• The finish is Black.
• The kit includes a buffer tube: Yes.
• Compatible platforms include AR15/AR10.
• The Universal Mini Stock (UMS) is machined from 6061-T6 aluminum.
• The HexOne buffer tube is cut from 7075-T7 aluminum.
• Listed overall dimensions are 2.15 x 6.55 x 12.75 inches.
• Product type is listed as a Stock Kit.
• Designation as an AR-15 accessory: Yes.

Built from USA-sourced billet aluminum and featuring a smaller footprint for improved shoulder anchoring, the CMSA offers a rugged, compact solution for builders seeking a low-profile fixed stock. Its HexOne tube and UMS combination deliver a sturdy platform well suited to compact carbine projects on AR-platform rifles.

Related Videos: