21 in 9x21 means that cartridge is bigger (because of bullet or case). So 9x21 silencer can pass 9x19 bullets, can be installed to 9mm barrel. It may be some difference in efficiency, but whateve.

Fixed

Fixed for Mk17

Realistically the Javelin should have an even greater damage value than the Titan, since that system is the Mini-Spike (which is a less capable man portable version of the regular Spike missile, of which has a penetration value of above 700mm of armor). Although from what I've seen the Javelin currently deals with most armor in one or two shots, the only real issue with it was the unrealistically low range that prevented AI or players from really using it to it's full potential. Although that's been fixed recently in the dev build.

Javelin damage is almost same as vanilla Titan. Regard ACE Titan it has 1400 damage + 585 submunition damage (which instakill everything) comparing to vanilla 95 damage + 585 submunition damage (I think ACE is a bit overkill). This ticket will closed after next update.

Launchers damage are now match vanilla, this ticket will closed after next update.

The helmet model that's currently in CUP is not based on one of those helmets, it appears to be a generic fireman's hat which are typically made of aluminium/nickel alloys or plastic mixed with composites. None of which are rated for ballistic protection. However I am aware of what you're talking about, for example the Germans used a derivative of their military helmet for their firemen.

Many firefighters, at least where i am, use military issue helmets in slighly modified variants. The base material is often aramid with temp protection coating. In the 90s and early 2000s german fire fightes used modified helmets based on the M92 military issue combat helmets. Since this is not the case around the world, wishlist prio.

The bullets exit above the barrel.

@Dusin All the CQC variants should have the lowest range value of the other variants and the HK416/17 and Mk 17/16 Standard length varaints (including the EGLM variants) should have a slightly lower range value than the SV/DMR variants (which should retain their current range value). All variants of the CQC HK416 also currently have erroneous stats and should be replaced with the values of the Mk 16 CQC variants once those weapons have their values properly set.

Upon doing further research I have realized that barrel length affects velocity more than accuracy, therefore the impact of the SBR variants should be slightly lower rather than the accuracy values.

This ticket has been resolved since this commit: https://dev.cup-arma3.org/rWEAPONSSVN1050 . AI will now execute fire missions when commanded to do so.

As no futher discussion happened - closing ticket.
Optics vs NVG may be fixed in https://dev.cup-arma3.org/T3201

Please, provide expected behavior (what exact result should be achieved)

Please, provide expected behavior (what exact result should be achieved)

This issue extends even further to the ammo boxes that the M136 is included in.