I added some pics to my previous post for you Duane. A couple of things. 1. in the second pic. you see a metal pin in the side of the which is used as a locator to keep the barrel from rotating and to limit it's forward aft movement. That pin caused me nothing but heart ache when used with the tamiya recoil so in my final version i took it out. 2. in the 3rd picture there is a brass strip bonded to the recoil stay. because of the pin problem i mentioned the stay was twisting. after removing the pin i removed this brass strip as it was no longer needed. I hope these pics help you.