Hi guys! I'm not sure with JG distributors in Canada but here in the Philippines, JG AK-47's comes in with type-2 stock cylinders. This does not match the barrel length of the AK-47. Can someone from your side of things confirm if JG AK-47's there comes with type-2 as stock cylinders? If so, i suggest that you use type-0 and seal all possible air leaks, that's 40+ fps on stock springs. My friend's JG AK chronoed @ 390fps, he just changed the cylinder type and sealed all air leaks, all stock. Chronoed @ 430fps.