AOLS Stainless Steel Cylinder Gearbox Sports & Fitness Review

As a loyal airsoft enthusiast and frequent Sports & Outdoors shopper, I was sorely disappointed with this product. As a result of my tests, I determined that the gearbox was poorly constructed and led to frequent jams and misfires. The only upside was the sleek stainless steel design. However, this small benefit does not outweigh the major con of poor performance. Save your money and invest in a higher-quality gearbox for your airsoft battles.

Very good cylinder for 416mm inner barrels, cylinder head fits perfectly with the piston, I was able to get a perfect air seal.

Honestly it doesn't take much for a part like this to get 5 stars but how can a part like that get 5 stars? Fits perfectly, no scratches or burrs, no bending or warping. Good cylinder, I recommend it to everyone. This is for AEGs with longer barrels. In other words, don't take the 250mm barrel.