[Cyma028-AK FPS drop when turn on the hop up]

ok, it sounds good. Thanks guys!

[Cyma028-AK FPS drop when turn on the hop up]

Just got a new cm.028 AK.

When I turn off the hop up, the gun is shooting well with around 315fps without any problem. However, when I turn on the hop up, the FPS drop very significantly. I think 260 fps when half of hop turned on and 220 fps when the hopup is fully on. Is it normal to CYMA AK? Is there any way to solve this problem (like upgrading the bucking)? Thanks!

[Quick Questions & Simple Answers.]

Hi, 

Did anyone purchase two-tone gun from gunfire.pl?

If I purchased 2 tone guns from gunfire, whether i need to provide some documents in advance or just paid the money and left the comment to gunfire?  (i am above 18 but do not have UKARA) 

Or anything else need to pay attention when i buy guns from gunfire.pl (like shitty UPS?)

 

Thak you very much!