Echo 1 E90 (P90) review

[cjboi]

I have a quick question for everyone who has a P90 or E90. I bought a madbull gemtech silencer about 6.2 inches long and 1.4 diameter thick. How long and which type of inner barrel i should get? Because i wanna extend it, I just dont want it to go over the silencer...

[R.I.T.Z]

Originally Posted by cjboi

I have a quick question for everyone who has a P90 or E90. I bought a madbull gemtech silencer about 6.2 inches long and 1.4 diameter thick. How long and which type of inner barrel i should get? Because i wanna extend it, I just dont want it to go over the silencer...

your silencer is about 150mm add that to the length of your inner barrel which is about 240mm so anywhere up to 390mm total length should be ok, though I'd suggest checking out in detail the length of your inner and silencer, in Millimeters. most silencers i've seen run 3/4 to full length under the silencer

[cjboi]

would that be equivalent to an m4 or m16 inner barrel? I have prometheus spring and a systema cylinder kit in my gearbox. but i notice that the FPS is everywhere. like 340 and sometimes 300. why is it like that? does anyone know?

Originally Posted by R.I.T.Z

your silencer is about 150mm add that to the length of your inner barrel which is about 240mm so anywhere up to 390mm total length should be ok, though I'd suggest checking out in detail the length of your inner and silencer, in Millimeters. most silencers i've seen run 3/4 to full length under the silencer

[R.I.T.Z]

Originally Posted by cjboi

would that be equivalent to an m4 or m16 inner barrel? I have prometheus spring and a systema cylinder kit in my gearbox. but i notice that the FPS is everywhere. like 340 and sometimes 300. why is it like that? does anyone know?

I am not sure, as I said measure and then buy.
as for your FPS, your hop-up could be off, your rubber could be damaged, your airseal may suck,

[cjboi]

I fixed it... Its the hop up bucking I didn't put it right. As for my seal everything inside is systema except for the gears. I tested it out first to get a good seal before I put it all together. Thanks for the help

Originally Posted by R.I.T.Z

I am not sure, as I said measure and then buy.
as for your FPS, your hop-up could be off, your rubber could be damaged, your airseal may suck,

[THe_Silencer]

This site should help u figure out what barrel lengths u'd need http://www.thewarstore.org/airsoft-p...-parts/barrels