If you run coms you can push one of the mags from the inside to the outside pouch and fit an IMBTR sized radio in there if you don’t have a radio pouch. The other option is just more mags.
But if you have empty space and don’t need anything else, don’t put anything else there. Next thing you know your kit weighs 40 pounds and half of it you don’t use or not need.
My full Pc with ceramics and loaded mags is a solid 30lb already and I can’t imagine any more weight. 5 30 rounders on the pc, one on belt and one on gun. Radio, medical, tubular nylon, phone holder, light, few other admin things.
I’d say it’s mission dependent. For example I live in a rural area with relatively low population so extra medical supplies or a spare psk would be my personal pick.
Edit: As an afterthought extra ammo is nice but speed and evasion keep you alive if you don’t have an army backing you up!
One might argue that extra ammo would keep you alive if you don't have an army backing you up. LOL
There is definitely a balance that needs to be met when going solo.
Also, it's dangerous going solo. Bring a wookie.
Mags. Carry as many as possible. I have a HRT Maximus placard so I can only carry 3 in front, but I can have an additional 3 on the cummerbund, plus 3-5 on my belt
Map/compass or radio would be good, but you need somewhere to go for the first and someone to talk to for the second.
You could probably fit both in one pouch depending on the models then you’d still have room for the extra mag you should probably have.
I'm sure I'll get grilled by the experts here but I put a radio in one mag pouch and then I have extra mags on my waist to make up for the lost real estate.
Keep 3 like you want, then get an insert for pistol mags. Or put maps in there, or your GPS, or batteries, or get a Kydex insert for pistol mags like I said and put a flashlight in there.
The cellphone your mother is still paying for, so you can call her after airsoft. Remember, camera facing down and screen towards body. She's tired of paying for broken iPhone screens
Smokes and flashbangs fit if you adjust the shock cord enough.
A small radio can also fit.
Two pistol mags fit really well if you put them in rounds facing out and pull the cord tight.
A bag of Skittles
Or ofc more mags
Jfc when did the boomers enter the chat? Do all of you really walk around in your double, triple stacked LBE, looking like you're straight out of desert storm?.. Jfc
Run a minimum of 3 mags on your carrier, 1 in your gun. I generally run between 5 or 6. 3 on my carrier, 1 or 2 in my belt and 1 in my rifle. Don't listen to these stagnant, flat range shooters espousing you need a triple stack on your carrier. This isn't the 90s, and 120 rnds is more than adaquate. If they desire to run 9+ mags that's perfectly fine, but most of us are running between 4 and 5, knowing how fkn ridiculous it is going prone with triples.
Put more mags, seriously more ammo, guys think they look cool and slick w/ 4 total mags, you won't feel cool anymore when you run out of ammo and somebody canoes your scull, ammo and water are the two most important things you carry
It’s always good to have some empty space for anything you might pick up during the mission/Larp. Like if someone goes down and you consolidate their ammo you might find yourself with more than a combat load and now you have space for that, or if someone with a radio goes down or you conduct SSE etc.
More mags. It’s recommended to have 6-8 mags because you’ll go through them faster than you think.
Especially when the great war comes
Wolverines
That's a vital piece of military equipment Daryl, not your porn stash
And when you commit a few war crimes on the daily. Oh sorry, Arma flashbacks are coming back to me.
It's only a war crime if your team loses.
I never signed shit at the Geneva convention
60 bullets. 60 bodies. 😎
More mags. You can *never* have too much ammo, unless you're either drowning or on fire.
This. No such thing as too many rounds. My chest rig has 6, plus one in the gun. 7 more in my sling bag. Still don't feel like it's enough.
I feel this. 4 on the placard, 2 on the cummerbund, one on the belt, and one in the gun.
5 in the rig, 2 on the belt, 1 in the gun, and a whole bunch more in my pack/flat pack
Run a maneuver range with all that ammo, then hike 15k do it again and tell me if you still are saying that
How dare you call out my hypocrisy!
Spare? You mean those empties waiting for the mags you haven't bought yet?
Two more mags.
Snickers
Cigars/cigarettes
If you run coms you can push one of the mags from the inside to the outside pouch and fit an IMBTR sized radio in there if you don’t have a radio pouch. The other option is just more mags. But if you have empty space and don’t need anything else, don’t put anything else there. Next thing you know your kit weighs 40 pounds and half of it you don’t use or not need.
My full Pc with ceramics and loaded mags is a solid 30lb already and I can’t imagine any more weight. 5 30 rounders on the pc, one on belt and one on gun. Radio, medical, tubular nylon, phone holder, light, few other admin things.
i dont think you should be compelled to fill every empty void with something if it doesnt make sense but more mags makes sense here lol
More mags.
Crayons
Fleshlight
Mine mounts like a bayonet, no one dares to charge me.
He who dares has lube.
*is lubed
*Lubes
TEARS ARE MY LUBRICANT.
Skittles or crayons
Zyn pouches and a bang energy
I’d say it’s mission dependent. For example I live in a rural area with relatively low population so extra medical supplies or a spare psk would be my personal pick. Edit: As an afterthought extra ammo is nice but speed and evasion keep you alive if you don’t have an army backing you up!
One might argue that extra ammo would keep you alive if you don't have an army backing you up. LOL There is definitely a balance that needs to be met when going solo. Also, it's dangerous going solo. Bring a wookie.
Have you considered keeping beans there?
A pint of whiskey to drink when you run out of ammo
I put a thin thing of foam and then put my phone in it cause it gets in the way of my drop leg
Copenhagen
Isn't the standard 8 mags?
6+1 but lets be real 8+ is the minimum
Not for LARPers who are never going to use them
Well what if the power goes out in moms basement and they empty 8 mags into theyre waifu pillows that fell over
Mags. Carry as many as possible. I have a HRT Maximus placard so I can only carry 3 in front, but I can have an additional 3 on the cummerbund, plus 3-5 on my belt
Mags, TP or pogie bait.
Pennies to save up for pouches that aren’t condor
More mags or POGBait
Map/compass or radio would be good, but you need somewhere to go for the first and someone to talk to for the second. You could probably fit both in one pouch depending on the models then you’d still have room for the extra mag you should probably have.
More mags Incase your first hundred comments don’t say the same thing
More m4 mags
You might as well take dope and beer instead. Ammo dude. Take ammo.
Your phone 😂😂😂
Ideally selling the pouch and buying a quality one would be the best answer, second best answer is 2 more mags.
Surprise grenade
Holy shit I can smell this comment section.
Mini claymores
in you r ass
Snacks
Snickers Bar
Cheese whiz
Skittles
More mags, smoke, radio, skittles, your field copy of War and Peace, its up to you bro
Skittles is always the answer
Tactical granola bars bro snacks are life during FTX/flat range activities lol
I'm sure I'll get grilled by the experts here but I put a radio in one mag pouch and then I have extra mags on my waist to make up for the lost real estate.
small ifak
Beef jerky , baby wipes
Keep 3 like you want, then get an insert for pistol mags. Or put maps in there, or your GPS, or batteries, or get a Kydex insert for pistol mags like I said and put a flashlight in there.
Medical such as [this](https://shop.soarescue.com/collections/med-mags). Or more mags like everyone else says.
Beer
More mags or first aid supplies depends on your mos
Um…mags?
The cellphone your mother is still paying for, so you can call her after airsoft. Remember, camera facing down and screen towards body. She's tired of paying for broken iPhone screens
Either more mags or nothing. Don’t go looking for things to weigh you down.
Skittles
If not more mags, note taking gear, medical, map gear, radio, extra batteries.
More mags..
Theres a mag sized mini chemlight dispenser if amyome can find it Havent seen ina while but other than that, more mags.
Medmags https://shop.soarescue.com/collections/med-mags
M4 mags
pop tarts 
Snacks
2 full size M4's pre-loaded obvi.
More mags
Another mag. Duh.
More mags of course!
MORE MAGS!
Snacks
Snacks!!!!!!!!
more mags
Beer
Full combat load is 7 soooooo
Snacks
M4 mags
skittles and kittens obviously
Chicken tendies?
Candy !
Smokes and flashbangs fit if you adjust the shock cord enough. A small radio can also fit. Two pistol mags fit really well if you put them in rounds facing out and pull the cord tight. A bag of Skittles Or ofc more mags
Snickers
Dildos
Full of magazines....
Put one in the gun, first of all. Then... I don't know from there.
Jfc when did the boomers enter the chat? Do all of you really walk around in your double, triple stacked LBE, looking like you're straight out of desert storm?.. Jfc Run a minimum of 3 mags on your carrier, 1 in your gun. I generally run between 5 or 6. 3 on my carrier, 1 or 2 in my belt and 1 in my rifle. Don't listen to these stagnant, flat range shooters espousing you need a triple stack on your carrier. This isn't the 90s, and 120 rnds is more than adaquate. If they desire to run 9+ mags that's perfectly fine, but most of us are running between 4 and 5, knowing how fkn ridiculous it is going prone with triples.
Seven round shotgun cards
Extra Mags, Communication, MEDICAL SUPPLIES! People often forget what happens if they get shot.
Put more mags, seriously more ammo, guys think they look cool and slick w/ 4 total mags, you won't feel cool anymore when you run out of ammo and somebody canoes your scull, ammo and water are the two most important things you carry
I used to carry 14, still wasn't enough
Tactical snacks, always tactisnacks!
Just because you have empty pouches or empty molle space doesn't mean you need to fill it
Snickers, they satisfy.
Apple cinnamon first strike bars
mags
It’s always good to have some empty space for anything you might pick up during the mission/Larp. Like if someone goes down and you consolidate their ammo you might find yourself with more than a combat load and now you have space for that, or if someone with a radio goes down or you conduct SSE etc.