Hey there! New to this site but thought it'd be a good place to give my opinion on the ISSC MK22 rifle as I have just purchased one last week, and lets just say it's not a good review. So the first time I fired the rifle I had shot probably 150 rounds through it and had constant feed problems and it would constantly catch the empty casing as it tried to load another shell causing it to jam. So I called the place where I purchased the rifle and(everybody is going to jump my case) but he claimed it's cause I did not clean the rifle before shooting, well contrary to belief I've never cleaned a rifle before shooting and have never had problems. So I gave it an extensive cleaning and went out a couple days later(yesterday) and the gun couldn't fire flawlessly with out some kind of malfunction. Issc told me it's the ammo, so I tried different ammo and same problem. The main problem is that the feed ramps do NOT line up with the chamber and the magazine is a very horrible design! So after I gave up trying to break this rifle in I went to clean it and every single screw on the rifle and every part was loose, the rifle is a very poor design and I highly do NOT recommend the rifle to anybody looking to get a tactical .22, I just wanted it because .223 is just too damn expensive to shoot! If anybody has this rifle please leave some replys.