[Dire_Wolf]

still get the same recoil because the force is still transferred to the rest of the gun in a backwards direction, it just doesn't do it solely through the hinge plate, it does it through the back of the lower frame, and via the lock pin at the front to the main body. The bolt catch still works, there's maybe a 1-2mm difference between the t-block on the return spring and where the pvc block is. I find the catch doesn't catch quite as COMPLETELY as otherwise, and can sometimes slip at a bump, but it's not a big deal.

So because there's a difference, it doesn't actually hit the t-block, and there's only minor strain on part 66 due to the back of the lower assembly being notched into both it and part 27. I can't actually say for certain what the gap is, just because it only hits when everything is installed.