The bolt was a bit of a tight squeeze! I had to file off a bit of the tang that keeps it straight in the receiver before it would travel properly.
Feels great now it’s in! To be as descriptive as possible, it goes “schlunk” now where the original mock bolt went “ting”. It also looks the part with the top cover open!
Theyve got two types, a short one for “U” style gas blocks and a longer one for more standard front ends.