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Element Polycarbonate Air Seal Hopup Chamber Set for M16 / M4 Series Airsoft A.E.G.
[HU-IN0802]
$19.99
by Jason R. Date Added: Monday 23 February, 2009
I recently purchased this because i decided to install a metal body on my JG M16 RIS. It is absolutely necessary to replace the hopup unit on all TM clones when moving to metal bodies. I was originally inticed by the dual set of o-rings. the one connecting the gearbox to the hopup in particular. I had at one point made it commonplace to apply silicone bathroom sealant to the outside of the hopup unit to create an efficient seal between the GB and the back half of the hopup unit but with this unit it is unnecessary. teh airseal between the magazine and the hopup unit doesnt mean anything to those who use highcap magazines but if you are using polycarbonate midcaps like those offered by magpul then this seal can also increase compression.

As it was previously stated the instructions are all but useless but for those who have built a fair number of AEGs hopup assembly is no harder than GB assembly. the gears all fit smoothly and the gears seat with a level of precision that i have only come to expect from systema parts. the adjustment gear is a little bit tight but that means that it will not require readjustment after during play. I am very satisfied with the construction of this hopup unit.

I would recommend this hopup unit to anyone who is looking for the next great thing in airsoft. Metal was at one point the best material for the job but there is a lack of precision in press forged materials. This polycarbonate unit is very tight fitting and sturdy. If you are looking for a great sealing hopup at an affordable price this is the unit for you.

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