ID: 36994 (MAG-WE-OBM4CO2-B)
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Don't get caught without a spare mag in the field. Fill out your kit with extra mags for your Open Chamber PDW or M4. This magazine is specially designed for the WE Open Chamber (a.k.a. Open Bolt) designed PDW, SCAR, ASC and M4 and WILL NOT work with the older (closed bolt) AWSS model PDW or M4. This magazine is a real steel capacity magazine and features a "blank-fire" mode which disables the bolt top function. The "blank-fire" mode is ideal for Military and Law Enforcement training.
Gas Type: CO2 (12 gram cartridge)
Capacity: 30 rds
System: WE Open Chamber System. Will NOT work with the "close bolt" AWSS system.
Manufacturer: WE-Tech / WETTI
(Write a review)
"Used in WE-Tech Scar-L.
These are pretty nice magazines. The outer shell is aluminum and the internals are pot metal, which is just cast zinc. The valve is brass and steel, the lip and follower are plastic, and the gas route seal is rubber. Efficiency wise, you can pop off all 30 rounds in semi with some CO2 left to spare. Holding down the trigger on full auto from start to finish, you can shoot about 25 rounds with some power but the last 5 struggle to go anywhere. Try a half and half. Half full auto, half semi. You can get all 30 rounds off with that. For those of you who have trouble with getting the CO2 to pierce, make sure the threads of the screw cap on the bottom match up with the treads on the magazine. That will cause problems. Also, oiling the top of the CO2 cartridge helps keep the o-ring squishy and keeps it from cracking. Lubing all o-rings from time to time helps keep the magazine working well. Highly recommended.
"I bought 2 of these mags to try out at an Op, neither Mag would even pierce the CO2 cylinder.
"These magazines work great with my M4CQB open bolt. Did have a problem with the magazines not locking the bolt back on empty but found a fix for it. The spring on the mag catch is weaker than the spring on the bolt catch on the rifle so when the last BB is fired, the mag catch cannot push up on the bolt catch. I removed the spring on the bolt catch on the rifle and now the mags lock back 98% of the time, which is a big deal for me. You can also try shimming the unit where the screw attaches to the shell so that the guts sit a hair higher than normal, but havent tried it, but in theory would work.
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