"Great gun. It has a LOT of power, and is extremely accurate. I can hit a thin-link chain with it from 30+ yards away. I heard that A&K used to have bad interiors, but that does not apply to the GR-300. The gearbox is well-built. The entire gun is made almost exclusively out of metal, which makes it very sturdy and well-balanced. The mag locks tightly into place, with no rattle at all (at least on mine). The only cons to this gun are the plastic handgrip, which feels cheap compared to the rest of it, and the fact that the paint scratches off easily, especially from the magazine. Also, the M120 spring requires a lot of power to pull back, Which makes the RPM rather unimpressive (around 600-rounds-per-minute), as well as rendering you with a short battery life. So I would suggest investing in a high-quality battery if you buy this, at least a 9.6V Ni-MH, but an 11.1 V Li-Po works best. Definitely recommended.
"Only giving it 4/5 for now until it's field tested tomorrow on G&G day at Ballahack. First thinks fist, the inner barrel is not 400mm, it is more like 330mm inner barrel stock. Mine came with a 9.6v small brick type battery, and I purchased an Intellect 9.6v nunchuck style battery, both of which fit very well, however the nunchuck style fits better due to the fact it is more flexible. Another thing to point out, as I plugged both batteries into my smart charger, said both had a full charge but t they barely cycle the motor. At first I thought I got a bad gun, but just to check I homed up one of my AK (known good) batteries, and Pew-pew she went. Anyways plugged both new batts into a wall charger for a couple hrs each and both work well. So I did a couple mods to this guy out the box: a 407mm TB barrel, a Modify hop-up unit; H-hop bucking nub, and a Madbull 60 degree red bucking. Pro needs the break-in a bit, but it has pretty decent range and laser like accuracy with my lancer Tac red dot out to 60ft. G&P high RPD mags feed flawlessly until you get to the last 3-4 bb's (wish I could buy the G&G magfollowers after market). The high cap that comes with it doesn't fit great but it does fit and lock into place. The folding stock is awesome quality, locks solid AF to the rear, however it flops around when folded to the side, no matter as I will still be marking fools with it. The sights are cool,although this could be a bad apple my rear sight is perma-canted.....tried making a spacer but to no avail, she Lea s to the left, but as firemen ruined I have that red dot😉. Oh yeah 407mm barrel fits like a glove, right to the end of the flash hider, and this thing has a metal hop-up unit in it stock, although looking at it the bucking barely gets any adjustment off if whatever is in there. Anyways I'm happy with my purchase, hope this review was helpful to y'all, it as a bday present to my self and picked it up from the epic deals, which was $160 like a minute ago.
"This Weapon is amazing! I Just received it yesterday and I was surprised to feel how heavy this gun was.I liked it. The battery fits perfectly in the chamber. It has a little rattle with the magazine, but that's all that's bad about this Weapon. It hurts when you get shot from close range, so you probably may want to get a pistol or lower FPS Weapon. In all this Gun is AMAZING! Great buy for 185.00. Recommended.