Quote Originally Posted by Brit plumber View Post
I was forgetting you are using a new Breech block so could it be the Breech block machining that isn't the same as the original in the outside edge of the machining for the feed horns? How does it compare to the original block?

Looking at the photo of where the block interferes with the ejector, it looks to be about 1/2" long so would you not have to move the safety slot back the same amount for it to clear?
Blocks look the same. Sorry for the cr@ppy photo, but you get the point. The groves are machined the same so they will ride over the magazine lips. The bolt intrudes over the ejector slot by 5/16" at best. I think milling the safety slot 5/16" farther aft on the tube would solve this problem. I'll call Jason and see what he thinks.