EWB_TUS

What looks like a carbine end plate is actually a beveled part of the lower receiver. I thought about milling that off but then I have to take the whole lower apart, get it milled, repainted, etc.

In communicating with Kurt at Kak Industry, he indicated that the rifle buffer tube I have is correct but that the buffer retaining pin location in my receiver is not. The carbine buffer tube works because it has more threads than the rifle buffer tube and is set with the castle nut. The rifle buffer tube has a shoulder that prevents it from going any deeper into the receiver. Thank you for the information about Rockset. Never heard about it before.

Thanks for the link; he was very helpful. Apparently, I don't have a "mil spec" receiver. At this point I am thinking I have to mill off the shoulder of the buffer tube so it will thread in far enough and either drill and tap a pin to hold the buffer tube in the right position or use blue threadlocker to hold the buffer tube in the right position. Obviously, thread locker would be easiest but is it sufficient? Thoughts? EWB

PS - meant lower, that's where the buffer tube threads in as I am sure the rest of you know 🙂.

I built an LR308 rifle initially with a carbine configuration and am trying to switch it to the rifle configuration. I bought an AR-Stoner rifle buffer tube but it doesn't thread far enough into the upper to retain the buffer retaining pin. I included a picture. Is there a rifle length buffer tube that will thread farther into the upper. Had no issue with the carbine one but it has many more threads and a castle nut. Thx