Originally Posted by chris games
the spyder acs (anti chop system) bolt does not work! I bought 3 of them cause I had the same problem, they all chop! I modded them all kinds of ways to get them to work but in the end I relized that the stock bolt for the gun works waaay better then these bolts. you could go for a regular delrin bolt which works just as good.
I have a spyder acs bolt in my imagine. I love it! it works great. i had to really lube the bolt and kinda "break it in" before it worked, but after it loosened it worked like a dream.
and check adjustment everything, and make sure you have the right bolt for the gun.