AGM Full Metal M4 Issues

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WhyHelloThere
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AGM Full Metal M4 Issues

Postby WhyHelloThere » Sun Nov 02, 2014 3:52 pm

I've had my Agm Full Metal M4(RIS) for about a year and a half. The only internal changes I made before playing were fixing the hopup because the spacer fell out and rewiring it to the rear. When I went to play with it it chronoed 146 FPS, but it's supposed to be 400. I talked to the techs there and they said it was either the hopup or compression loss, so I bought and Echo 1 MAX series hopup after noticing my hopup was cracked, a Maple Leaf 75 degree bucking, an Echo 1 MAX series air nozzle, and to play it safe with the wires, a Lonex rear wire assembly(Version 2 Gearbox).(I also have a crane stock(why it is wired to the back) and an Intellect 9.6v crane stock battery.)
I installed all the parts and did compression tests on everything(all perfect), but I think my FPS is still low(I don't have a chrono). Also, the hopup adjusts before i install it, but has very limited movement once installed. When firing, if I point the gun down, the bb that would be the next to fire falls out and my semi automatic isn't semi, it's full auto.
So, I'm very pissed off about how much money I've put into this gun with no good results.
Just to clear a few things up, I have good bbs, Elite Force Biodegradable .25's and I'm not doing anything stupid like assembling the gearbox incorrectly. I don't know if it's just my spring and I also wanted to know if the bb's falling out is normal or not. Also, I want to just send it into a tech, but I really can't afford it.
Any help/input is appreciated. Luckily I have an APS UAR coming in this week so I have something to play with :D

UPDATE: I fixed my hopup issue(cut off excess plastic from mold) so now I just have the fps and semi auto issue.
tsabiston
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Re: AGM Full Metal M4 Issues

Postby tsabiston » Tue Jan 13, 2015 3:10 pm

To be respectfully frank, if your gun isn't working correctly, then you did assemble the gearbox or gun wrong in some way. I would like to try to help you. Reply back so I know your still watching this thread.
WhyHelloThere
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Re: AGM Full Metal M4 Issues

Postby WhyHelloThere » Tue Jan 13, 2015 7:59 pm

Thank you for responding, I forgot that I posted this. I believe that I've fixed all of my issues, except possibly the FPS. I still don't have a chrono and when I go to games, they don't have them there, so I can't test it. I put in a Modify sp110 spring so I should get at least 350 FPS, but while I'm on this forum, can you recommend any good lubes for gearboxes/O-rings? I just want to make sure I have good compression.
Also, just so you know, my problem with semi-auto failing was that the Lonex trigger trolley wasn't catching on the stock cut-off lever. I just put the Lonex wires in the stock trigger mechanism and it works perfectly. I'm not sure what caused the BB's to fall out, but taking the hop-up apart and making sure it was reassembled correctly did the trick. I also re-applied lubricant to the gearbox for compression, but I doubt it'll be a good seal for long because I currently only have automotive lubricant.
Thanks again for your help.
tsabiston
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Re: AGM Full Metal M4 Issues

Postby tsabiston » Wed Jan 14, 2015 3:55 pm

I use madbull gear lub and piston lube. They both come in very small containers. The gear lube is black and the piston lube is clear. You will pay for these items but it is worth it. As far as the piston head and cylinder I use silicone oil only. This is because I like high speed setups and silicone oil has a low viscosity and allows rapid repeat compression from the o ring. I also use a small 1/4" flat paint brush to apply my grease. This saves grease and allows me to get it in all the cracks and crevices.
WhyHelloThere
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Re: AGM Full Metal M4 Issues

Postby WhyHelloThere » Mon Jan 19, 2015 6:51 pm

Thanks so much for the reply. I'll throw the Madbull lube on my next order. I really appreciate your help.

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