Does a .45 acp carbine really need a recoil system anyways? No
If you shoot fast you will notice the muzzle recovers much faster. This things shoots softer and faster than my colt 9mm. The muzzle rises straight up naturally. I just picked it up at SHOT the second time in my life and shot fast enough to topple their steel stand on the range. They had to stop the range and put the target rack back up.