Light weight plastic body- could not believe how light it was out of the box
Auto winding - The box mag is self-winding, a function which is linked to the trigger. Pulling the trigger is all you need to do to fire all 2500 rounds. No manual winding is required and there are no separate buttons to press to wind the mag.
Anti-reversal latch release button - The gearbox features a handy button which releases anti-reversal latch, letting the piston fall to rest. This is a great feature since the gun is full auto only, it gives you a way to make sure the main spring is at rest when you're done using the gun
Polycarbonate gearbox - Made of thick, light weight, transparent polycarbonate, the gearbox shell is one of the guns most interesting features. Because it's transparent, diagnosing problems is easy. It's made of polycarbonate (the same material used in bullet-proof glass) so it's sure to be strong while staying light weight
FPS - Good out of the box FPS, between 330-335 with .20g BBs.
Carrying case - A 'Pelican-esque' plastic carrying case is included with every gun
Hop up adjustment - sucks in my opinion, I needed to have it adjusted and was unable to do it on the fly
Over all I was impressed with the performance of the M249 . Only issues I had out the box was Hopup and the Box mag power feed cable sometimes failed to maintain positive contact causing the M249 not to fire
future upgrades will included SP120 spring to bring FPS up to 380s and new piston head
After about 2000 rds this weekend everything looks to be in tiptop shape
NO cracks or sign of premature wear
