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Discussion Starter · #1 ·
http://www.evike.com/product_info.php?products_id=30248

I'm thinking of getting this as a 'drop in' part in my g4 a3 dmr, (pretty much a glorified m16), im using it as a base build. What are you opionions on the parts in this gb? I think I'm going to just get the gb and leave it as is besides a shim job and greasing it, and see how it performs before i replace anything, but anyone think i should replace anything right off the bat?
 

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Discussion Starter · #3 ·
My friend got the same gearbox but with an m130, he is getting close to 500 fps, I don't want it that high, i want 420-450, plus the field I go to wont allow a dmr to be more than 470 fps
 

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Discussion Starter · #6 ·
Whats your opinion on the piston and piston head? If you think I should swap it, which ones would you guys go for? I'm looking for a 440ish fps build, that will only be fired on semi.
 

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1st--The piston is very nice with full metal teeth.
2nd--The head is ok but would go with a Guarder.
Ive been running a M150 spring on the stock internals and have only had problems with the trigger contacts.
 

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With the m150 spring im getting 580fps which is more than i wanted.

Systema M150 Spring (500~550 F.P.S.).
King Arms H.Q.A. Hopup Bucking - 80 Degree / Hard Type
Guarder Reinforced High Speed Ball Bearing Aluminum Piston
Matrix High Performance Magnum Motor - Long Type.
Silverback Advanced MOSFET Motor Driver
Matrix / Tenergy High Output 10.8V 5000mAh Ni-MH Large Type Battery
Matrix Prometheus Type Steel 6.03mm Tight Bore Inner Barrel (469mm)
 
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