AR-9 Roll Pin

This Roll Pin is used to hold the mag catch on the AR-9 Super Lower in place. If you are interested in using your own AR-15 build kit, then you will need this part along with a AR-15 Reinforcement Kit and a Heavy 9mm Buffer to complete your AR-9 Super Lower. However, unless you already have many of the parts, it is highly recommended just to buy the AR-9 Combo Kit, as it contains all of the parts.

This pin is 3/32″ Dia and 1″ long. 18-8 SS.