For: AE Performance Upgrade Kit for VFC AK SeriesProduct Information:
I got this a while back and installed it into my VFC AK74U and I am more than happy. I used these parts with a Systema M120 and I'm hitting 390 FPS with .2s. The cylinder head was a very tight fit into the cylinder, and I actually had to use another cylinder because it woudn't fit. The cylinder head would not budge into the stock VFC AK cylinder. I used a CA cylinder and it worked fine. Nozzle was a good fit and gave good compression. It had alittle o-ring inside. The spring guide was 3 serperate pieces that slides ontop of eachother. It works well
-Gave good compression
-Dual Oring Cylinder Head
-Parts have good construction
-Did not work with stock VFC cylinder. Had to use a CA cylinder (slightly bigger).
-Spring guide is still plastic