Receiver/barrel extension problems


#1

Hello. First post. My name is Wayne. Just put together a upper and ran into a new problem. My barrel extension sticks into the receiver too far. I have seen the issue with not matching the feed ramps, but this is something totally different. Attaching pictures. https://photos.app.goo.gl/YTHLknuVQSw6ufgB9


#2

Is the extension too long?


#3

I’m honestly not sure what size it should be. Point me in a direction?


#4

Hey @Wayne_Adam , that is an interesting looking upper receiver.

Please provide the brand and model / variant of the upper receiver and the barrel. The more detail the better. More pictures of each wouldn’t hurt either.

In terms of measurements, if it is a small platform (AR-15) you’re looking at roughly .98" from the inside shoulder of the barrel extension to the end and about 1" measurement from the receiver face to the feed ramps. See below: