Enjoy them, their great right out of the box!
I?ve been enjoying mine for maybe 2 years, I put a brace on it right off while I waited for my form1 to come back to sbr it. I recently added the correct ... I mean ?retro? mag well a couple weeks ago. One of the features I liked is that it uses NATO (AR) mags but I finally gave in and did the conversion $150 includes 5 30rnd mags & the magwell.