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GHK M4 / M16 Airsoft AEG to GBB Complete Gearbox Conversion kit with magazine (Version 1)
[GB-GHK-M4GBB-V1]
$99.00 $80.00
by jacob o. Date Added: Wednesday 29 January, 2014
my friend recently ordered this because it was an effective and cheap way to get a gbb
when he got it it came with every thing and the mag but we experienced a problem putting it into his gun. he has a m16 and it will fit the dboys m16 with some modifications. it is designed for the rifle to have a collapsible stock but he had a full stock so the screw wouldnt let the gbb gear box fit properly so we took a bolt cutter and a grinder and shaved it down.
now it works amazing it is pulling about 290 right now which is good considering we chronoed outside here in Virginia and it was about 20 degrees out side.
the mags are solid and dont leak but we suggest even though we havent had a problem to get some moondog orings cause eventually you will need some o rings.

pros
high fps (290 in 20 degrees is really good)
sturdy construction
it has nice recoil similar to a .22

cons
a bit of work to put in a gun but if you have a collapsible stock you should be good
increase in maintenance when switching from electric to gbb whichh is ok
a lot of work to do to get it in the gun and make sure it fires correctly

other than that it is a great upgrade for any aeg m4 style rifle

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