XM556SBCT3 ?

What is this (I know what it claims to be...)? Is it really "firsts" and equivalent to the FBI contract ammo in every way but name, or is this seconds/somehow less desirable? Who the hell was it loaded for? I have the capacity to dig a little bit, and have not personally been able to come up with ANYTHING. It "doesn't exist" according to my sources at Federal LE. This indicates it was likely a SKU made for a 1-time contract type deal or something is my best guess. It's not a commercial SKU, nor is it a standard LE SKU.

I did, however, find this, FWIW:

http://i65.tinypic.com/20j65o3.png

Bought some. Shoots around 2moa with a 4x scope from my ddm4, 10 shot.

https://scontent-ord1-1.xx.fbcdn.net...39817257_o.jpg

It should be current FBI style carbine ammo.

Quote:

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Originally Posted by DocGKR

It should be current FBI style carbine ammo.

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Is it indeed contract-quality "firsts" as my shooting above and the advertisement from my supply claim, or is this seconds leaked through the commercial side of the house?

Curious if this SKU is still in production as contract, or no.