Pro-Arms Threaded Outer Barrel for Elite Force GLOCK 18C Gas Blowback Airsoft Pistols (Color: Black)

"I purchased this for my Umarex Glock 18c and gotta say this is a really solid upgrade from the stock outer barrell, my stock one had a issue in which the inner barrel didn't fit tight enought and the causing the slide to not close correctly (almost finishing the cicle it get stuck near the end of the muzzle), so when I put this on my replica I realize that the inner barrell now doesn't come out of the outer barrell, and aftershoot testing it the stuck issue has been solved, definitively a solid upgrade for any Glock 18c owner!