The Universal Mini Stock is Phase 5’s fixed stock for Stoner-platform rifles that fit a variety of buffer tubes and receiver extensions. Note, the UMS is a stock to be installed on a rifle and installing on an AR-15 pistol variant would be considered an SBR (Short Barreled Rifle) as defined by BATF rules. If you have not paid the fees and received an approved tax stamp from the ATF, it will be illegal to possess an SBR.

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