Training with AR pistol style firearms?

[Perplexed]

I asked this question in another sub forum, but I figure it'd be more appropriate here. Is there any type of training where participants can use AR pistols or similar firearms? I have a Sig MPX pistol that I'm really digging, and I'd like to see about perhaps competing with it, but I'd want to become more proficient with it first. Anyone done anything like this?

 

[Gunbuffer]

Put a sbr and train for it like a sub gun

 

[Perplexed]

Put a sbr and train for it like a sub gun

Other than doing that. I'm asking about AR pistols - you know, the kind that can be bought and sold without NFA paperwork or wait times of 8-10 months.

Perhaps a sling used SAS style?

 

[tomthebaker]

I would think you could use one in any carbine class.