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Caelum · July 9th, 2013, 01:56

I'm in the midst of reassembling an A&K SR25 (CA, G&P clone I believe), with an extended V2 gearbox (V2.5), and decided I might as well put some new parts in it to help with consistency/reliability. I have a few questions regarding upgrades (they are bolded).

I already have a PDI 6.01 509mm inner barrel, with plans to R hop and shim the hop up arm, and install barrel spacers, so for now accuracy related parts are taken care of.

The gearbox is mostly stock, with a new cylinder head, sorbo pads, and a TM "EG 700 super custom" motor.

Gears: I will be swapping out the stock A&K gears for either a set of CA torque up SR25 gears or a pair of SHS torque up gears.
Which is brand is more reliable?

Gearbox shell: I have the option to change the gear box to either a stock CA V2.5, or a X-Power V2.5 gearbox.
Is this really necessary, since I will be keeping the FPS under 450? How is X-power as a brand?

Piston: I will be replacing the stock piston with SHS 19 steel tooth polycarb pistons, unless there is a better and more readily available piston?

Loading nozzle: I have been having problems finding a metal SR25 loading nozzle. It is about a centimeter longer than a standard M4 nozzle.
Does anyone know where I could find a metal replacement with one or more o-rings?
Would a G36 or AUG nozzle work?

Spring: I have a standard AEG spring in the gearbox right now, but I want to swap that out to a correct length spring.
Where can I find a spring that will work in this mechbox?
Is the TM EG 700 motor I have strong enough to pull a spring rated for 450 fps?

mosfet: Is a mosfet with active braking necessary for this build? I will be rewiring, and removing the fuse.

mock silencer: I don't actually have the quick detach mock suppressor for this rifle, it was misplaced long ago, however I would like to order a new one.
Is it legal to import mock suppressors? Last I heard, it was pretty hit or miss..

There are quite a few questions in there, so if you can only answer a few, or have some info you think I missed, please speak up!

July 9th, 2013, 01:56	#1
Caelum Trader rating Join Date: Jun 2011 Location: Manitoba	A&K SR25 Upgrades I'm in the midst of reassembling an A&K SR25 (CA, G&P clone I believe), with an extended V2 gearbox (V2.5), and decided I might as well put some new parts in it to help with consistency/reliability. I have a few questions regarding upgrades (they are bolded). I already have a PDI 6.01 509mm inner barrel, with plans to R hop and shim the hop up arm, and install barrel spacers, so for now accuracy related parts are taken care of. The gearbox is mostly stock, with a new cylinder head, sorbo pads, and a TM "EG 700 super custom" motor. Gears: I will be swapping out the stock A&K gears for either a set of CA torque up SR25 gears or a pair of SHS torque up gears. Which is brand is more reliable? Gearbox shell: I have the option to change the gear box to either a stock CA V2.5, or a X-Power V2.5 gearbox. Is this really necessary, since I will be keeping the FPS under 450? How is X-power as a brand? Piston: I will be replacing the stock piston with SHS 19 steel tooth polycarb pistons, unless there is a better and more readily available piston? Loading nozzle: I have been having problems finding a metal SR25 loading nozzle. It is about a centimeter longer than a standard M4 nozzle. Does anyone know where I could find a metal replacement with one or more o-rings? Would a G36 or AUG nozzle work? Spring: I have a standard AEG spring in the gearbox right now, but I want to swap that out to a correct length spring. Where can I find a spring that will work in this mechbox? Is the TM EG 700 motor I have strong enough to pull a spring rated for 450 fps? mosfet: Is a mosfet with active braking necessary for this build? I will be rewiring, and removing the fuse. mock silencer: I don't actually have the quick detach mock suppressor for this rifle, it was misplaced long ago, however I would like to order a new one. Is it legal to import mock suppressors? Last I heard, it was pretty hit or miss.. There are quite a few questions in there, so if you can only answer a few, or have some info you think I missed, please speak up! Last edited by Caelum; July 9th, 2013 at 02:18..