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z King Arms Full Metal Fully Licensed Colt M4A1 Carbine Airsoft Gas Blowback GBB Rifle
by William H. Date Added: June 17, 2011
The KA M4 is a fantastic airsoft gun, and to have licensed trademarks from Colt is awesome. There is one thing that caught me off-guard tho. My gun was configured from the factory for BOLT-LOCK DISABLE. It does have a working bolt-stop, but it was disabled in the interest of a higher ROF. Adjusting the ROF is accomplished via buffer spacers behind the spring in the buffer tube and you'll want to take all of them out except the thinnest one if you want full bolt-stroke, lock-back on last shot, and the ability to manually lock the bolt rearward. If you don't care about bolt-stop, you can put more spacers in for a higher ROF. (Gun comes with four sizes which can be combined, see owners manual.)

Note also that the barrel threading is 14mm CCW, so order yourself a nice 14mm- flash hider to go with this bad boy. The one that was factory-installed on my gun was plastic.

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