||very good AEG, has a good weight and a good size to it. the only possible problems foreseen with this gun is the clips and the batteries, the clips must be put in stright, any other angle and it will fall out or break the intake ring.
lots of railing for mounts
hi fire rate and FPS
consistent shots and distance
easy disassemble and field strip
realistic weight and size
Clips don't have the best seal, solved by duct tape around the rim of the clip
Batteries, the 9.6 butterfly style battery is meant for the 551 model, if you want to fit the battery into the 552 cut one of the batteries in half and rewire
Safety switch is a little awkward for right side dominant shooters, left works great.
in conclusion, very good gun for a very good price, be fair warned if you do choose to get this gun please be ready to modify certain components. don't expect a deliver and fire weapon, as a plus you get closer to your weapon, get a good feel for it, build trust that something wont break.