Had mine for a year now, and i'm quite satisfied with it. The blowback system is really cool, and the gun is accurate to the real thing down to the smallest detail. Good accuracy, and a very high rate of fire. Works fine with 8.4 or 9.6 v batteries. Suprisingly heavy. The folding stock has been useful on more than one occasion. .2 or .25 BBs both work fine. Reasonablly good FPS with no upgrading. The blowback system is very simple and easy to disable, for whatever reason.
-Accurate to the real thing down to the smalles detail.
-Good accuracy without upgrading.
-Neat-o blowback for impressing friends/strangers, and adding an awesome clanging noise to the sound of firing.
-Haven't found an AK magazine that won't fit (besides TM mags, whick work differently).
-Almost twice the weight of the real thing.
-Finish dosen't like water, dry after use.
-The piston it comes with is crap, prepare to replace it. Ground mine into dust.
-Good luck finding replacement rods for the blowback, you get two with the gun, and I haven't found a way to get replacements anywhere.
-Airsoft GI CEMENTED my muzzle break on, making it unremovable and rendering the PBS replica silencer I bought complete garbage. I was unable to get it off, despite generous amounts of solvents.