High Tower Armory’s innovative HTA 90/22 stock is now shipping. The stock includes everything needed to make a standard Ruger 10/22 into a P90-ish bullpup and comes in three flavors; black, olive drab, and flat dark earth. The converted 10/22 has a working charging handle and safety in the same places as a real FN P90, but the translucent “magazine” up top is a fake, simply storing spare .22 rounds for looks. You’ll need to insert a regular magazine from underneath, where the actual P90 ejects its spent casings. The HTA 90/22 ejects its empties to the right using the standard 10/22 ejection port, which you can see peeking out from the side of the stock.