Parts needed for pistol build. I have a AR 9mm block type lower and a side charging upper. Just need part to complete the build. AR-15 9MM barrel, 7 to 9" Hand-guard/rail prefer M-Lok. No quad rails. 7" BCG for 9mm AR, needs to work with glock mags Lower parts, want something like Strike Industries parts, as far as ambidextrous safety, takedown pins Trigger, want good single stage light pull. HK type sights More glock 9mm mags, 17 plus capacity, maybe drum mag Please let me know what you have. Located in San Antonio Thanks.