Phase 5 Weapon Systems Inc, (Phase5WSI) introduced a few new products this year at SHOT Show 2017 but the one that really stood out the most was this awesome new AR buttstock called the UMS or Universal Mini Stock. The Universal Mini Stock is an ultra compact al metal stock that can be attached to virtually any buffer tube out there including standard carbine buffer tubes and many AR Pistol buffer tubes. This could come in really handy for guys running an AR Pistol buffer tube on their AR Pistol while waiting for the tax stamp to come in. Once their stamp comes in and the AR is registered as an SBR you can just add the UMS on instead of needing to remove the pistol buffer tube and install a carbine buffer tube that accepts a stock. Sounds like these are a couple months away from being available for purchase. Check out the video and picture below.