barrel detent removal for ULE mainbody on classic frame?

[SneekyBastrd]

Hi, I just got a ULE mainbody for my 'mag, and I'm trying to install it. The barrel detent on the classic mag frame is getting in the way, and I was wondering if there is a way to remove it? Thanks!

[Dayspring]

The twistlock assembly is what keeps the barrel in on the old bodies.

Turn the rail upside down. See the brass assembly there? Smack it with a hammer. Out it comes.

[SneekyBastrd]

Thanks!