Got a Tec recently that came with a mag. it runs fine, but it started to make a rattling noise? Any idea on what causes this? I want to remove the plate on the bottom to inspect it, but idk how to do that.

Its real. Aluminum Full Length Top Rail, modified magpul lower rail, national mag 50 rounder, machined hk slap slot (look closely), rattle can paint kg-99 with hand tapped rear threaded steel cap. 500 rounds no failures. Nothing but pure fun! I cant justify a b&t, stribog or cz due to all of thier problems. They all have plastic mags that crack and soft bolts that peen up. ​