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October 21st, 2009, 04:05 | #1 |
problem with installing hop up unit
hi i own full metal AGM HK 416 and it had 2 piece plastic hop up unit. so i decide to change it to one piece metal hop up unit and bought systema one piece hop up from one of ASC member. When I got the package it was fine, there was no problem with hop up what so ever. however, when i tried to put the hop up into my rifle, it's too tall. In another word there is little gap between top and bottom receiver and I can't lock it with body pin. so far i tried to trim down where hop up unit sits, but there is still little bit of gap left and i really can't trim down anymore. what should i do here??? should i also trim down my hop up as well ??? any thoughts??
thanks
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October 21st, 2009, 04:37 | #2 |
Pictures might help.
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October 21st, 2009, 12:30 | #3 |
here i hope that this would be better
IMG_1447.JPG here is the gap IMG_0141.JPG this is the part the i trim down. I think by 2mm or so IMG_1446.JPG here is another angle of gap IMG_1449.JPG and this is the hop up.
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Last edited by iggim109; October 21st, 2009 at 12:36.. |
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October 21st, 2009, 13:17 | #4 |
aka coachster
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you need to trim a fair amount. look inside and see where it's still getting hung up.
I put the one piece metal hopup in my marui receiver and I had to cut more than expected. |
October 21st, 2009, 13:40 | #5 |
Super Moderator
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I've never installed a one piece hopup in this type of setup but I was under the impression that you had to totally cut out that section iggim trimmed?
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MODT - Magnus Operator Development Team - tu fui ego eris Gray Fox Strategic - @grayfoxstrategic on Facebook / Instagram |
October 21st, 2009, 14:40 | #6 |
Tys
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I thought so too...the last one I did needed the opening flush up to the front of the magwell...the "base plate" of the hopup unit is usually square...and it decends down far enough to be where the the built in base plate is on existing receiver.
It's not only got to go in/down far enough...it's got to be able to be "tilted" in as the receiver closes up. |
October 21st, 2009, 16:18 | #7 | |
aka coachster
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Quote:
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October 21st, 2009, 16:19 | #8 |
Inside the receiver needs to be squared off, and a small chunk need to come out from the front of it so there's enough room for it to slide backwards and forwards.
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October 21st, 2009, 16:28 | #9 |
I did this on my old Marui body. Completely cut out that whole section. And it worked like a charm. It is completely empty in a metal body.. Why would it be any different if it were a plastic body.
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October 21st, 2009, 17:07 | #10 |
asexual lumbricus terrestris
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that silvery bit you see needs to disappear.
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October 21st, 2009, 19:52 | #11 |
Yes, the front section needs to come out, so the upper receiver with one piece hopup installed can slide back onto the lower receiver. Cut out the part that would impede that on the top/front of the lower receiver. I can give you more details if you need it.
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October 21st, 2009, 21:37 | #12 | |
Quote:
thank you every one
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