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Airsoft Systems ASCU Fire Control System for Ver 2 AEG Gearbox - Gen 4
by Glen C. Date Added: April 2, 2013
Works great but not the easiest to install. If you install on a G&P you will need to grind out part of the gearbox. Nice that you get rid of the anti-reverse latch. One step says you need to remove the trigger spring to test the clearance. You need to install the spring with the trigger when you put the gearbox together it is not clear in the instructions. You will also need some super glue to place a small plastic block on the end of the trigger.

Don't lose it It is really small. Also I don't think a Speed trigger will work with this. It is also different than the gen 2 in that there is no contact switch other than for the cut off lever. For the life of me I don't know how the trigger actually activates the fire mechanism.

So far it works will. The three round burst is the coolest thing also no sticking semi-auto anymore.

Make sure you have a strong magnet motor or you can't use all of the features and the anti-reverse latch has to stay in. My G&P 120 works fine.

4/5 stars because it was a little more difficult than I thought and instructions could be a bit better.

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