budorange

I've just added a couple of inches

lucky you and your friends, wasn't my case. as i said i was into upgrading because it was shooting 305fps/0.20 ootb anyway I've managed it to work, replacing the whole gearbox .. I had one ready for another gun, so I placed it inside the stubby, now It shots fine 120mts with an ms120. btw,you can't believe how hard was to unscrew the RAS, I had to because mine had the outer barrel somewhat tilted to one side,and so the hop chamber too.

sry din't catch at first.. , about 370 @0.20, far from mine @305 out of the box, I'm working on it now..

so your stubby was over 400fps out of the box? (with 0.2) WTH

yes it was chronoing at 305 out of the box this is why i put my hands on it,, I did want it to shot at least a full j with 0.2.. this evening I'll try to revert all to stock parts and see if things have changed.

I bought the stubby last month, I've opened it to take a look at the internal and changed a couple items , see spring, cylinder head and nozzle and spring guide with guarder parts, when test firing comes the surprise , 70 mt's with an ms110.. ok started it all again , swapped cylinder with a correctly holed one, hop chamber with a systema one, bucking,mixed up things, everything except the gears, but I keep getting the same crappy mt/s. I've another theory but I still have to test it... at one point I put the stock spring in my M249 to see how does it perform, and guess what? it