I had an M40A3 built by Dan over at DDRoss Company. I had the action clip slotted with his rail, DDross recoil lug, his bolt knob put on, and a side bolt release. I attached some photos of his work. His metal work is beautiful. He installed the Badger Ordnance lower and it was pillar bedded in titanium devcon. The barrel is a Shneider S7 contour with a Mcmillan A4 stock. The gun is very acurrate, I have shot sub quarter MOA at 100yds. I am very pleased with the work performed. Enjoy!