i actualy run an aftermath broxa
i did do a lot of mods to make it runs smooth!!! and have a tight regroup!
on the broxa 1st the air nozle have no seal you need first to replace it with an seal equipped air nozle.
http://www.airsoftparts.ca/store2/in...roducts_id=764
secondo the gear original shimming is completely absolutely (crappy).
http://www.airsoftparts.ca/store2/in...roducts_id=676
http://www.airsoftparts.ca/store2/in...roducts_id=880
do replace your piston and piston head beacause the piston is verry weak especialy if you want to run a m110 spring. and the piston head dont talk about the seal (crappy too)
http://www.airsoftparts.ca/store2/in...oducts_id=1377
http://www.airsoftparts.ca/store2/in...roducts_id=780
ho an important thing a sorbo pad i did hear that these gearboxe's are a little fragile
http://www.airsoftparts.ca/store2/in...oducts_id=1354
for me i did run the stock spring and its doing the job perfectly
a bearing spring guide ... of course
http://www.airsoftparts.ca/store2/in...roducts_id=759
i did have a missfire problem with it and by replacing the tapped plate everything was fine.
http://www.airsoftparts.ca/store2/in...roducts_id=754
the stock motor is very good but make sure to tight the little alen bolt on the pinion gear beacause its loose from the manufacturer (little tip)
anf finaly the hop-up rubber very important
i do run the original hop-up but with a hop-up rubber it run's very well
http://www.airsoftparts.ca/store2/in...roducts_id=867
i did replace all those thing beacause i have sme serious problem whit all those parts so im just telling you by experience
i love my gun now and since i've been change all those parts i shoot about 30 000rds and absolutely no problem not even a glitch
i go to every event and its an acurate fast and reliable gun but ....
with a little mods in it
have fun !!!!