The replica is perfectly working, no jamming. Comes with 5 capsules and a red dot. I changed the outer barrel with a TDC hop up but I removed the screw from the top because it was so loose that its always came out from its place and the outer barrel stucked in it sometimes but it perfectly works with the original hop up wheel. I changed the bucking to Quantum friction and since than I shot out only 2 mags. I used it with 0.30 BBs.