Just picked up a G36 and have yet to shoot it, but had a few concerns about it. #1 - The slide fits significantly looser than my G19. It has a good amount of wiggle at the muzzle end of the receiver. It's so loose that when sliding the upper back onto the frame, it's possible to "miss" the rear rails and have the upper receiver only half seated. I tried to reproduce this with my G19 and couldn't make it miss the rear rails if I tried. #2 - Why dry firing the gun, just before the trigger breaks, the upper moves about 1mm to the left when looking down the sights. At first I thought I was crazy, but if I lightly cradled the muzzle end of the receiver and frame, you can actually feel this movement. It does this with/without a magazine in. I went to another shop and checked out their display. It had less of the side to side play that mine does, but still exhibited the issue with the trigger break. Any thoughts? Something to be concerned with before I put some rounds through it?