9mm AR?

[rob_s]

...plus ammo is less expensive and easier to handload.

I've considered the reloading aspect, but the 9mm I generally buy isn't really any less expensive than the 5.56 I generally buy, so for me it's a wash.

I need to get my press set up and get into reloading for 9mm but I don't know where I'd find the time, and reloading is second only to precision shooting for absolute most boring thing I can do that is still firearms related.

[Kokopelli]

Indoor range use... Plenty of ammo on hand.. Ron

[djegators]

Well, for me, my Colt 9mm is simply fun to shoot. Another big advantage for me, is that my girl is willing and able to shoot it. She is highly sensitive to loud noises, and this is the first firearm above a .22 she likes to shoot.

[svtpwnz]

Well, for me, I selected this caliber for several reasons. I can shoot this rifle at my local indoor range, ammo is less expensive for it, and It is a lot of fun to shoot. These 9mm AR's beg to be SBR'd and suppressed. I just wish mine was already

[kruzan]

Have you seen this HK MP7 video?

http://www.hk-usa.com/video.asp

[Alaskapopo]

I have owned a Colt 9mm and later a RRA 9mm. I used them for cheaper practice vs shooting 5.56 but frankly I dropped them because they did not do anything I wanted that my .22 long rifle AR does not due but way cheaper.
Pat

[Todd00000]

I read an article about the OP's question in a Police/Gun magazine and he said the same as most here, and the cost savings of having a "one round" Police dept.

[glock2026]

why 9mm ar? I used to ask same questions so i made a list of reasons..................
1.it can shoot steel close up( without destroying targets)
2.most indoor ranges only allow pistol cal.)
3.makes more sence for home defence than 5.56
4.some area shooting ranges allow nothing but pistol
5. easier to suppress ( and with subsonic really works)
6.short barrel not hard to do (and dont matter if i loose velocity)
7. ammo alot cheaper ( when i go to range i take 1000 rds with me cause i have 5 other 9mm guns)
8.fun
9.there are too many reasons to list , personally i have a newer intragrated magwell rock river 9mm with all magpul fde furniture , they are worth the investment if you can affordor get any 9mm carbine it just fun.

[Moltke]

Have you seen this HK MP7 video?

http://www.hk-usa.com/video.asp

MP7, neat idea. Have you read this?

https://www.m4carbine.net/showthread.php?t=19913

9mm is better for a subgun, semi, auto, suppressed, etc. Not to mention the familiarity of controls on an AR platform.

I'd still rather have a 5.56mm though.

[Moltke]

I read an article about the OP's question in a Police/Gun magazine and he said the same as most here, and the cost savings of having a "one round" Police dept.

Reducing the capabilities of a police force to only have "one round" would be a terrible idea as they'd find themselves easily outgunned by generally anyone/everyone. You need bigger calibers and different calibers for different things such as being able to shoot through stuff, and being able to shoot farther, or being able to shoot [I]very/I] accurately.

Not all police engagements are face to face or only a few feet away so I think the cost savings would be easily outweighed by the reduced capabilities. The North Hollywood Shootout is a perfect example of a "one round" police force being outgunned.

http://en.wikipedia.org/wiki/North_Hollywood_shootout