my freind has a JLS FN SCAR and is broken dont know what the problem is

my freinds scar was shooting 350 fps and now its down to almost 200fps im not sure of the problem is. and i would like an idea of whats wrong with it "JLS FN SCAR"

it sounds like he lost compression somewhere, maybe his hop up bucking tore, that seems to be a pretty common problem. hope that helps.

yah but if the hop up bucking tore what does that do doesnt it just put backspin on the bb or am i thinking of somthing else and the hopup did get all jacked up thanks

yeah the hop up bucking tore and he lost compression.

thanks know of a site to get a replacement

Anywhere that sells airsoft parts really, I'd recommend a madbull blue hop-up bucking as a replacement. You can get a pack of 2 for $12 at airdog, but I'm sure you can find them online just by googleing, If you can't just send me a PM and I'll find a site.

ok thanks

wait the hop up bucking puts back spin on the bb how does that create an air seal

The bucking might not be torn, it might just be folded up.

oh