Generally I would not recommend stuff like an SMG if your purpose is just to lay down a lot of fire. In actual practice (at least in where I am at, you guys have gigantic fields) an SMG does provide an incredible amount of firepower and are more accurate (if it has a folding stock), but they are often way too bulky and heavy to carry and maneuver, when you're carrying an already fairly weighty and lengthy rifle. Even the Modify PP2000 which is by all intents and purpose a machine pistol still feels too bulky for the job.
- AAP01 is IMO probably your best choice for a sidearm. Super cheap itself, super cheap to customize, workable OOTB and upgrades are not necessary, super light because the entire shell is plastic, accurate due to well secured chamber, very little you will actually want to change straight off the bat and not that much even when it finally gave way (just some steel stuff here and there). My real problem with it however is the trigger is somewhat heavy and mushy as well as the looks are just ugh.
- Hi-Capa and Glock series (bar the G18) are solid choices in themselves, no spare parts problems and pretty much one of the more mature/reliable platforms you can get. In general the Hi-Capa has the advantage of a very light trigger pull allowing for some very rapid shots, but ultimately a thing of preference.
- Mk23 is an often touted choice but I personally disliked it as an option. Even preferences due to realistic limitations aside (there are literally no fields where its muted nature is particularly applicable here), It's bulky like a Desert Eagle, has very little holster choices, and a gosh-darningly heavy trigger making it pretty much impossible to fire quickly if things went south which is important in an unavoidable straight firefight, a surprisingly very common sight here.
The aftermarket support is always mentioned, but it honestly matters less than you'd think, as long as it exists in some decent capacity. The difference between having 100 parts vs 2000 is meaningless, if performance is the goal. There's of course some correlations between quantity and quality, but let's skip that for now. You won't be using more than one specific kind of part at a time. It doesn't matter if there's 40 different variants of said part. You just want one quality replacement and that's it. The difference between biggest aftermarket support (Hi-Capa) vs. smaller one (AAP-01) is meaningless from perspective of performance. Both have access to the highly optimized quality parts.
This can never be understated, just in the case of VSR alone many VSR parts are there but almost nobody picks anything beyond the AA stuff for practically 99% of the builds, outside of testing or for meme values. You're gonna get the best or most recommended stuff anyway if you are to upgrade something.
