sleepingsabbath1970Sonic’s 12.5 upper. It’s the extreme reduced gas port meant for high back pressure cans. I shot maybe one mag through it. Placed the order 01/12/2026 got it 03/13/2026. It’s a fine upper and very flat shooting but I have things I like more. Includes phosphate BCG, radian charging handle, surefire 3 prong, rail covers and Magpul BUIS. If you don’t want them it’s no big deal I’ll just take them off. NO TRADES
