Spartan billet lower for a Glock magazine and upper from Joe Bobs along with the KAK Bolt for 10mm. I also ponied up for the SB SBPDW Brace. I have a Larue MBT-2s trigger. Plus I have several lower parts kits for reapirs. What started this was I thought I had purged myself of all AR15 parts after I just built a 350 Winchester Legend AR 15. I still had a good free floating handguard. How could I let that go to waste? I am deliberating on a barrel KAK has a 8 inch barrel but I prefer a 10 1/2 inch barrel. I will also buy a KAC 10 oz buffer for the pistol and their linear comp. I also have an older Aimpoint to mount on it....Details?