Angel Custom Advanced PSS10 VSR-10 Precision 100% CNC T7075 Aluminum Piston

"I purchased this piston along with the AC spring guide, AC sp150 spring, and speed airsoft trigger and piston sears. The only wear I've had on this setup is a very minimal amount of the anodized finish wearing at the corners of the piston sear, but no wear on the actual metal, which is actually made out of cnc steel ( I contacted speed airsoft). As far as the piston goes, assuming you still have the stock piston, take the O-ring off of the stock piston and put it on the new piston, and you have perfect compression. Overall 5/5 on the piston, besides the O-ring.

"You can't beat the price on this. Great quality item. The construction is nice, and the back end stainless steel part looks like it should hold up to a lot of shooting. If you're looking for a 45 degree upgrade piston, this is the best value for your money. It has an air break on the front, and some padded material to reduce the force on your gun.