I use a scope on my M16, just because it helps track the BB's better. I never use anything more than 3x though, but I figure most acog's are 3x or even 4x anyway. They also look cool :D

People that clearly doesn't understand how a chrony even work.

Because I just saw it yet another time in the Classifieds:

So no, you can't sell a "Akimbo Glock" or whatever; You can't describe using AKIMBO This/That in your loadout. Leave that to COD please!

That stupid front sight on the KSC Glock 17 that perpetually falls off or breaks off.

Pussies

Lol that annoys the fuck out of me.
"he switched to .28 he's shooting to hard"

If your at 415 on .2 your to hot for any weight there buddy!

Your next peeve will be when guys shoot your eye out.

Coincidentally my peeve is when guys post up with no idea what they're talking about.

Magpul.

All the new paintballers joining that are calling our airsoft guns "Markers"

I used to draw with those!

Old timers and/or chairsofters who chronically and needlessly hate on various things in an unproductive and unhelpful manner, or go out of their way to hate when they could instead be helpful ambassadors. People who are perennial jerks to everyone whose life path up to that instant didn't precisely match theirs, so if the stuff y'ought-to-know is even slightly mismatching, hellfire ensues. Happens here every day, not nearly as much on the field where it's hard to do that to someone's face.

List of stuff people hate on:

1) New people, new players, expansion of sport
2) Brands of guns or brands of gear
3) Types of guns (some hate on AEGs, some hate on GBBs)
4) People whose only crime it is to have played call of duty and to have gotten excited about military/tactical/gun/etc stuff

I'm guilty of #2, #3, and #4 . Trying to get better at it ;)

You've been hanging around the wrong old timers pal and FYI we all hate on #1 only if he/she deserve it and as for expansion of the sport?........well that is a whole other topic that would not get resolved until all the soccer moms become extinct, they all whine and bitch like a little girl when it comes to anything resemble a gun and in my opinion they all need a massive dose of man the fuck up

today my largest peeve... the word BACKORDERED

People who don't take time to learn. Mainly the type of people that have been playing for for 2+ years and don't know how to adjust a hopup, or how hopup works.
Also, when lipo batteries turn normally intelligent people into mouth breathing morons.

You've got me curious now. Haha.

Its the 'buffer tube lipo = pipe bomb' crowd, and their associates.