[phant0m chief]

what does in mean anti chop system.

[Roadkill]

A system in the marker that basically prevents your gun from firing without a fully chambered ball. This prevents your bolt from chopping the ball in half in your gun. Most guns with anti chop systems use electronic eyes that can detect a ball, though i think older angels had a different method (sensi?, cops?) but i dont know too much about those.

[Torch]

ACS in an electric sense is just what Roadkill said- an electric system that stops the gun from chopping paint.

What's a chop? That's when the gun fires while paint is only half-loaded into the breech. The bolt will break the paint in half and create a lovely mess. Some guns will jam from the shell fragments, almost all will have accuracy or loading problems until cleaned.

The Kingman ACS is just like the JAM bolt, which probably means nothing to you at this point. The bolt is in two over-lapping sections, and they are attached with a spring. The theory is that when the bolt hits a ball, the bolt spring will collapse and the bolt will bounce off the ball isntead of breaking it in half.

In my experience, this system works fairly well. The one I installed would prevent chops, but I would have to recock the gun afterwards. At any rate, this was better than cleaning it constantly. Other people love it, some hate it and say it is worthless.

[lets-c-u-dance]

its supposed to stop a ball from chopping. Most are electric, but I THINK they have acs bolts, but I don't know how well they work.

[Lokbomb]

ACS is either eyes, like the one guy said, electronic eyes, when the paintball breaks the beam that they eyes send, (1 eye to the other) then the PCboard will let you fire.

ACS Bolt. Like the other guy said, bolt separated by a spring. When the bolt compresses due to the paintball being in only half way, you have to recock the marker. Both work good.

You can get away with just the bolt for starters if you want to. Some markers are very cheap that have eyes. The Vexor for $140 for one.