There are numerous cad files online available.
http://grabcad.com/library/tag/ar15
I'd also look at Tactical Machining, but it does look like they are out of stock. I've bought from Dimitri @Ares Armor, his products are great, but they are seriously backlogged right now and you may be looking at a wait for your products. I'd call first before ordering.
http://grabcad.com/library/tag/ar15
I'd also look at Tactical Machining, but it does look like they are out of stock. I've bought from Dimitri @Ares Armor, his products are great, but they are seriously backlogged right now and you may be looking at a wait for your products. I'd call first before ordering.