17 Design stripped lower, in stock at the LGS same price as a PSA no shipping no FFL fee. Why would I not jump on that, plus, looks better than my previous lower from Palmetto. Very well done. Bonus,comes with a take up screw already installed to remove the rattle on a loose upper lower connection. When you build one you don't get 100 others to match the fit, nope, you get whatever you get, tight, loose, etc. Nice touch.