[Kos-Mos]

Lots of questions and random answers in this thread.

PDI makes every possible part for that rifle. That includes receivers, barrel sets, cylinders, pistons, triggers and hop-up units.

LayLax (or Prometheus, they are the same, Promy is AEG and Laylax is bolt action) make only the parts that are required to have a very good rifle.

It's all up to personal preference. I tried PDI cylinder sets a few times and I am not touching then anymore. You DON'T want to mix and match systems. PDI makes a kind of upgrade parts, and generally,every other brand uses an other method. Means if you want to install PDI cylinder sets, go with their trigger, piston and all other related parts. If, like me, you can't stand them, go with quality parts from OTHER brands.

If you want a PDI gun, you should go with theses, in order:

PDI hop-up unit.
PDI 6.04 10mm tightbore barrel, 499mm (the outer diameter is larger, reduces vibrations a lot, more consistent and precise shots).
Firefly AEG hop-up rubber. Soft or Hard (not Super soft or Super hard), depending on FPS. Sub 450 is soft.
PDI barrel spacers (at least 2) for 10mm barrels.

PDI bolt carrier replacement screw. That is the screw you see at the rear of the bolt that hold everything in place. The stock part is junk. Upgrade is worth it.
PDI V-Trigger for APS-2 Type 96. Can be used with stock piston and bolt while you gather the 300$ for the next step.

PDI Vacuum type LV.3 bolt upgrade set for sub 450 fps guns.
OR
PDI Heavy type LV.3 bolt upgrade set for over 450 fps guns.


Then if you want to build a gun with something else, you actually have to use some PDI parts.

PDI hop-up unit.
PDI 6.04 10mm tightbore barrel, 499mm (the outer diameter is larger, reduces vibrations a lot, more consistent and precise shots).
Firefly AEG hop-up rubber. Soft or Hard (not Super soft or Super hard), depending on FPS. Sub 450 is soft.
PDI barrel spacers (at least 2) for 10mm barrels.

PDI bolt carrier replacement screw. That is the screw you see at the rear of the bolt that hold everything in place. The stock part is junk. Upgrade is worth it.
Laylax Zero trigger set. Does not come with a piston. If it does, it is not the right one. It has to be made for "APS-2 Type 96" The regular APS-2 trigger DOES NOT WORK.

Modify APS-2 Type 96 piston. I like this one quite a lot. Sear end is steel, body is aluminium and it uses modular heads like the 3-pieces pistons.
Prometheus or Modify APS-2 piston head. (Does not have to say Type 96, it is the same part).
Laylax upgraded spring guide set (you can change the shaft from 7mm to 9mm but don't forget to thread lock the shaft). OR Modify 7mm or 9mm spring guide for Type 96. I prefer the Modify part over Laylax, but if you are on thigh budget, the Laylax one will let you change spring without extra expenses.
PSS-2 120sp, 130sp 140sp and 150sp springs. With both spring guides, you get a range of FPS from 400 to 550.
Laylax teflon cylinder for APS-2 Type 96. Again, T96 part, not just APS-2.
Modify steel cylinder head for T96.
Laylax sorbo-pad set for VSR-10. (It works for T96, install all 3 pads on top of each other)

When you have all that in your rifle, you have a VERY decent gun.
Fitting the parts might be tricky on clones, but worth it. I found that Laylax/Modify parts are more forgiving for fitment, and do a better overall job (since we are not playing is a white room, thing can't always be perfect).