utg mk96 ?

Oldgreg, welcome to the forums! Please make an intro post in the proper section so that we can get to know you.

Also, there is a ton of information regarding this, and I suggest you read some of the stickies in the "Others" section.

I would say, in a nutshell, that you need to reinforce/replace your trigger box in order to use the spring in that kit. If you don't have the cash for a new box, simply use the cylinder parts included in the kit, disregarding the spring.

aydonmill said:

I was so happy I didn't blow mymmoney on a Zero Trigger.

Click to expand...

Zero triggers are built for high velocity set ups/durability. I have a feeling this box will not hold up for a long time, depending what kind of power upgrades you have in there.

Are you running the piston in the new trigger box you got?

And no worries, this is on topic in terms of the trigger box.