Shortest overall length for AR 9mm carbine?

[Starslinger]

If I wanted to build a 9mm AR (carbine, not pistol), what is the shortest overall length I could build? I know the barrel would be 16 inches long. Length of pull should be, what, 12.5 inches? Are 9mm AR receivers a little shorter than .223/5.56? Overall length of 34 inches possible? I've never built an AR. Thanks for any help.

[Oldmandan]

No, the receivers are the same length, only the magwell location and magwell length are different on a 9mm. 30” is the minimum length you can go

The length really depends on what stock and buffer tube you choose to use....

[naz]

30”

Check out the flowcharts linked at the top of the desktop site!

[Oldmandan]

Just measured my 9mm, it comes in at 32.5”. This is using std buffer tube, and a MFT minimalist stock, no muzzle devise just a thread protector

Could go shorter, but that’s where I like the stock at...

[Starslinger]

Thanks folks!

[_TomT_]

Is the 30" true for 22lr as well?

[Quiet]

Is the 30" true for 22lr as well?

Semi-auto centerfire rifles = minimum 30" overall length. [PC 30515(a)(3)]
Manually operated centerfire rifles = minimum 26" overall length. [PC 17170(b)]
Single-shot centerfire rifles = minimum 26" overall length. [PC 17170(b)]
Rimfire rifles = minimum 26" overall length. [PC 17170(b)]

Overall length is measured with the firearm in the shortest possible fireable configuration (stock folded/collapsed). [People v Rooney (1993)]
^When measuring overall length of semi-auto centerfire rifles, non-permanently attached muzzle devices are removed. [11 CCR 5471(x)]

[sigstroker]

Can't you have folding stocks if the mag is locked?

[Milsurp1]

[Quiet]

Can't you have folding stocks if the mag is locked?

If the mag is locked yes you can have features, but the 30” minimum measurement will be tested with the stock in its shortest configuration.

What he said.

Having a fixed magazine allows a semi-auto centerfire rifle to have a folding/telescoping stock, but it does not negate the minimum overall length requirement.
^Which will be measured with the stock folded/collapsed and non-permanently attached muzzle device removed.

[sbo80]

Mine's right about 32". I'm not sure you can get under 30" without a folding stock, if you use a standard length buffer. Without the stock on mine, the buffer puts it right about 30, so any stock at all will take it farther.

[sfvshooter]

When I bought my Sig MCX (pre RAW), it came with a side folding stock, but a ridiculous ~8" brake so when it was folded, it'd still be above 30".

First thing I did was remove that silly thing and add a telescoping/non-folding stock.