I've been using an L96 for years, and even I still can't remember the differences between the different MB-XX styles.
If you aren't sure which type of trigger you have, the first step is to break your rifle down and get a good look at the current trigger assembly. From there, look around for L96 trigger assemblies. For reference, my rifle once had a metal trigger assembly that looked a lot like this -->
MB01 MB05 Type96 AW338 Trigger Assembly for UTG TSD Shadow Op & Comp. Airsoft Sniper Rifles | Evike.com
And don't forget to create an introduction post! It's nice to know a bit more about everyone on the forum, especially if you'll be sticking around :tup: