P90 shooting multiple bbs & low fps

Slodin · January 14th, 2015, 20:46

So far I'm having two problems. I don't really know how to work on airsoft guns.

First is that the P90 is shooting like 2-3 bbs from a fresh mag everytime. It seems that if I only load around 50 bbs in one mag the problem goes away. The mag I got should hold 100 which is weird. I have 4 of them, and all of them are like this. Maybe it's because I how a 64rd than a 100rd, but everytime I accidentally over fill it since my speed loader is a 100rd loader, I get this 2-3 first shot off a fresh mag.

Second is that the fps is low, I was told that this P90 has a M120 installed by the pervious owner, also a madbull tightbore and some bucking. It's only shooting 280fps for a .25 (I don't have .20 bbs since I don't shoot them). That's even lower than factory. Although I play indoors, so that fps is great. However, I'm not sure if that will damage anything..

Any thoughts would be great.
Thanks

Spike · January 14th, 2015, 20:48

Change the hop up bucking, 90% of the time double feeds are caused by a worn out bucking. Also inspect the barrel for damage. The madbull python tightbores are coated, and if they get scratched then they're useless.

With perfect air seal a 120 spring will net you between 420-440fps so yes, it's definitely way too low.

*edit* Also, worn and damaged buckings will caused air loss between the hop up assembly and the nozzle, resulting in crazy FPS drops.

Slodin · January 16th, 2015, 05:35

Quote:

Originally Posted by Spike

Change the hop up bucking, 90% of the time double feeds are caused by a worn out bucking. Also inspect the barrel for damage. The madbull python tightbores are coated, and if they get scratched then they're useless.

With perfect air seal a 120 spring will net you between 420-440fps so yes, it's definitely way too low.

*edit* Also, worn and damaged buckings will caused air loss between the hop up assembly and the nozzle, resulting in crazy FPS drops.

thanks, do you have any recommendations on a bucking? I hope I can get it through amazon.ca or .com I looked through some airsoft stores here and they barely stock buckings...

Spike · January 16th, 2015, 23:00

Pretty much every retailer carries them. My personal favorites are G&G green and Lonex 50D. PDI W holds work better but you have to be more careful when installing them, if they go in crooked they're less forgiving than standard buckings.

I sell them too, PM me if you can't find one you want.

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January 14th, 2015, 20:46	#1
Slodin Trader rating Join Date: Apr 2014 Location: Surrey B.C	P90 shooting multiple bbs & low fps So far I'm having two problems. I don't really know how to work on airsoft guns. First is that the P90 is shooting like 2-3 bbs from a fresh mag everytime. It seems that if I only load around 50 bbs in one mag the problem goes away. The mag I got should hold 100 which is weird. I have 4 of them, and all of them are like this. Maybe it's because I how a 64rd than a 100rd, but everytime I accidentally over fill it since my speed loader is a 100rd loader, I get this 2-3 first shot off a fresh mag. Second is that the fps is low, I was told that this P90 has a M120 installed by the pervious owner, also a madbull tightbore and some bucking. It's only shooting 280fps for a .25 (I don't have .20 bbs since I don't shoot them). That's even lower than factory. Although I play indoors, so that fps is great. However, I'm not sure if that will damage anything.. Any thoughts would be great. Thanks __________________

January 14th, 2015, 20:48	#2
Spike Privateer Airsoft Trader rating Join Date: Dec 2008 Location: Beaverbank, NS	Change the hop up bucking, 90% of the time double feeds are caused by a worn out bucking. Also inspect the barrel for damage. The madbull python tightbores are coated, and if they get scratched then they're useless. With perfect air seal a 120 spring will net you between 420-440fps so yes, it's definitely way too low. edit Also, worn and damaged buckings will caused air loss between the hop up assembly and the nozzle, resulting in crazy FPS drops. __________________ I change primaries like other people change socks. Last edited by Spike; January 15th, 2015 at 10:04..

January 16th, 2015, 23:00	#4
Spike Privateer Airsoft Trader rating Join Date: Dec 2008 Location: Beaverbank, NS	Pretty much every retailer carries them. My personal favorites are G&G green and Lonex 50D. PDI W holds work better but you have to be more careful when installing them, if they go in crooked they're less forgiving than standard buckings. I sell them too, PM me if you can't find one you want. __________________ I change primaries like other people change socks.

P90 shooting multiple bbs & low fps

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