Function has been flawless although it gets dirty quicker (expected anytime you use a supressor). I didn't have to change any recoil springs in the handguns. I do have a neilsen (booster) in the osprey 45 even though I am shooting a Beretta which doesn't have the lock tilt barrel design and supposedly doesn't require a booster. All in all, it has functioned perfectly well and I am quite happy I purchased a Osprey 45 instead of a Osprey 9. The biggest drawback is changing the booster out when I want to swap from the Beretta 9mm to my HK45 due to the thread patterns being different between my two handguns. 9mm is 1/2x28 and the HK is a 16x1 LH.