Guarder Cylinder Enhancement Set for TM AUG Series.

"The air seal nozzle is decent. It's made of POM and seems pretty sturdy, but air seal-wise, it would be better if the o-ring inside of it was a bit bigger.

The cylinder head is a REALLY good cylinder head. It provides the perfect seal when coupled with the cylinder. It's made of steel and features a double o-ring design.

The cylinder is really good. Being made of chromium, it is really sturdy and won't break anytime soon. The inside is nice and smooth, especially if you grease it up with air seal grease. Coupled with a Guarder cylinder head, you can get perfect air seal.

The piston head is very lightweight, so it won't slow down RoF at all. The eight ports allow for an efficient expansion of the o-ring. The material that it is made of has minimal flex and is stronger than other polycarbonate-made things.

The piston actually seems pretty darn strong. I predict that it'll last a while, but only time will tell. I do believe that a G&P piston is better, however, so if you can, I would go with one of those.

Overall, a VERY good buy. The AUG that I installed this in shoots laser beams now.