CMMG 5.7 Pistol

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http://www.thetruthaboutguns.com/2018/07...in-fn-5-7x28mm/

For those fans of the 5.7 who were looking for a PDW-esque pistol.
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I've never understood the attraction to this cartridge. In the FN pistol it might make some sense. But not in an AR platform gun, long or short. More expensive, harder to obtain ammo. And nowhere near the power of the 5.56 in an exact same size gun.
 
5.56 isn't ideal in sub 10 inch guns. These new guns look pretty cool.

Edit: It looks pretty easy to get sub $.40/rd 5.7 ammo. It's not crazy expensive vs 5.56.
 
Last edited:
Originally Posted By: hatt
5.56 isn't ideal in sub 10 inch guns. These new guns look pretty cool.

Edit: It looks pretty easy to get sub $.40/rd 5.7 ammo. It's not crazy expensive vs 5.56.


5.56 out of an 8” barrel probably still beats 5.7x28mm out of an 8” barrel.
 
Originally Posted By: john_pifer
Originally Posted By: hatt
5.56 isn't ideal in sub 10 inch guns. These new guns look pretty cool.

Edit: It looks pretty easy to get sub $.40/rd 5.7 ammo. It's not crazy expensive vs 5.56.


5.56 out of an 8” barrel probably still beats 5.7x28mm out of an 8” barrel.
For sure. At the expense of significant noise and blast and increased wear on parts from the short gas system.
 
Originally Posted By: hatt
Originally Posted By: john_pifer
Originally Posted By: hatt
5.56 isn't ideal in sub 10 inch guns. These new guns look pretty cool.

Edit: It looks pretty easy to get sub $.40/rd 5.7 ammo. It's not crazy expensive vs 5.56.


5.56 out of an 8” barrel probably still beats 5.7x28mm out of an 8” barrel.
For sure. At the expense of significant noise and blast and increased wear on parts from the short gas system.


Yeah, it would be begging for a suppressor.
 
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