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King Arms M4 / M16 Metal Hop Up Chamber.
[Hopup-KA-M4-16]
$29.99
by Howard H. Date Added: Thursday 15 May, 2008
Great chamber if you are having problems with you hop up backing off after a few shots then this is the chamber for you. It has a rubber ring that goes around the base of the biggest gear to keep it from backing off. This chamber also has two o-rings that help it to seat better in you gun, one goes at back where the chamber goes into the gearbox and one goes around the feed nozzle at the bottom of the chamber(where it presses into the mag). It also had a differend barrel clip than is normal (copy off the prometheus design) but it will hold you barrel in place and keep it from rotating at all, due to two little tabs that stick out of the barrel clip and fit into notches on the chamber. This can make it a little hard to get on and off, but to get it on you have to make sure the barrel is perfectly centered and the cuts in the side are equidistant from the edges of the hop up chamber and they you just put the clip on as normal, and to get it off you need a small object (small screw driver, etc) to pryout one of the tabs and the barrel clip will just pop off. I give it a 4 because it comes with no instructions which could be a problem if you dont have a lot of experince with this type of hop up chamber. And the spring that pushes the chamber back towards the gearbox falls off its nub and gets lost in a matter of seconds, and the screw for the main adjustment wheel is a bit too long, you can either get a different screw, of file down the end of the screw to make it the right length.

Rating: 4 of 5 Stars! [4 of 5 Stars!]
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