Use 3D variants.
See CBA keybings - default is Ctrl + Num -

Could create a new class and hide the old one.

Don't think it so important to make another 20+ classes just for changing marking of suppressor.
Irl the difference mostly in the mounting part of muzzle device, which is often may be changed.

Iirc they inherited from Bizon, and bizon was configured to use 762 muzzle devices for years, so very likely it won't change (as vityaz released more than 1 year ago).

IIRC mesh in View-pilot LOD should be removed for everything that is worn on the head (like headsets piece in vest, helmets, goggles, etc.)

Just some weird idea:
Please, try to disable all options in Settings - Addon Settings - CUP Static Weapons and try again.

The cause is "cursor = 'gl'", without this line all works properly

Guess it now needs baseWeapon attribute: https://community.bistudio.com/wiki/Arma_3_Weapon_Config_Guidelines#Virtual_Arsenal_visibility

CUP's L115A5 has magazine proxy in model so it's expects that magazines has corresponding 3d model. ACE .338 mags are without 3d models, so they are not displayed in-game.
Try to ask in ACE3 slack or github (see https://github.com/acemod/ACE3).

anything but the CUP magazine, Loading either of the two ACE3 338 magazines

Are you sure that ACE3 magazine has proxy model?

You are about 1+ year late, but if you gonna to rename it all - change reqs in https://dev.cup-arma3.org/w/addon_development/stringtable/ first

It's due to animated rear sight position vs in-game ballistics. This, or floating rear sight on 500+ zeroing.
No chances that someone will redo this.

For backward compatibility i propose to not to change cup_optic_cws, but add new class (e.g. cup_optic_cws_nv) with IRL's NV mode only; then replace stringtables with "AWS" and "CWS".

For subsonic rounds, please, use AKS-74UB (unfortunately not in our mod), so nothing we can do right now. If you have proper bits (like rearsight for subsonic ammo) - feel free to donate.

@W0lle
Maybe we should rename SA-58 to Vz. sa 58 instead? =)

It's over half a month before April 1, please be patient and do not troll prematurely.

Added

Updated ticket, as beige camo uses the same model as other variants, so problem is common for all afrf uniforms.

Is it reproduces with different heads (vanilla / livonia / tanoa)?

Yup, fixed in https://dev.cup-arma3.org/rWEAPONSSVN1358

Press Num 0

Hmm... i had something similar once with fortifications (after few artillery firemissions), but was using vehicle on fire mod, so thought it some side effect. But maybe fortification objects should be checked too

Some vegetation clipping:

Hope position in EDEN is correct:

Similar near Bolota airfield: from distance it looks like dark earth, but in close - grassy field

Same as at https://dev.cup-arma3.org/T3540

Both woodland and desert ACR piltos look ok both dev and release.

DPM / OD added.
Flecktarn and tropentarn variants are availble as Germany uniform
Flecktarn/OD is available as NAPA uniform

SA-58P weighs exactly the same as the SA-58V despite having a fixed stock compared to the SA-58V's collapsible stock,

Please, add expected result (better with images)

Wrong materials on lod2 (and maybe other reslods), mat for belt metal parts applied to pouches

Added expected result to ticket, original description may be skipped

Front part of sight should be remodeled (lense should be moved deeper and be smaller), so shadow lod need to be redone in future anyway

Suggestion to use https://dev.cup-arma3.org/w/addon_development/stringtable/#uniform-naming-standards for all uniforms : ACR Combat Fatigues ({Camouflage}/{Model-Options})