03-16-2019, 04:17 PM
LR1955 Wrote:M1A:
Yes, without seeing a picture of them, I would suspect they are barrel extensions using the rifle feed ramps and not the M-4 feed ramps.
You can do a search on the internet and find pictures of each if you don't already know the difference.
Or you can take a picture and post it to the forum for us to see and we will tell you.
If I am correct, the first thing I would do is to replace the rifle barrel extension with a M-4 barrel extension.
Your problem was not new and this was the primary cause of the problem you describe.
One thing I wouldn't do is screw around with the other things until I was sure the barrel extensions had M-4 feedramps.
LR55
https://www.ar15.com/forums/ar-15/Educat.../4-571237/