Federal Ammunition SKU identification

Federal Ammunition SKU identification

When purchasing 5.56 ammunition, it’s important to purchase the right kind. Federal Ammunition makes some very good products, but when I was first looking this up, there was a lot of confusion about the different product SKU’s. There was XM193, XM193BLK, XM193A, XM193AF, etc – even M193. Which should one get?

As it turns out, there is NO difference between any of the XM193 SKU’ed rounds. All of them are the same spec and manufactured 5.56 round. The ending designations are 100% to indicate the kind of packaging they come in. That is it.

M193 is also 5.56, but has different tolerances/specs than XM193. “M” by itself means that it must meet military specification (mil-spec) while “XM” means it does not. Mil-spec is very stringent and even a small thing out of specification can lead to tons of ammo being rejected. It is also usually illegal to purchase “M” specification (since it should be going to the military) – and reviews show XM shoots just as well in most circumstances.

So now that we know that all the different XM193 round flavors are the same round but in different boxes – what do those different ending designations mean?

SKUDescriptionAppearace
XM193XM193 5.56, 20 round brown box. 25 of these small boxes are often packed in a larger brown box to yield 500 rounds per case.
XM193F“Packaging for XM193 is now done in Anoka, so a new part number (XM193F) was needed for FET purposes. THIS IS THE SAME ammo as XM193, and XM193C.”
Example
Federal Lake City 5.56mm NATO XM193 Ammo 55 Grain FMJ BT
XM193BKXM193 5.56, Loose Bulk, 1000 rounds per case. Not as pretty as the boxed stuff as some note that rounds may get small dents during transit, but hasn’t been considered to cause actual firing problems.
Example
223 Remington (5.56x45mm) 55gr FMJ Federal American Eagle Ammo Case (1000  rds)
XM193A and XM193AFXM193 5.56 rounds packed in ten round stripper clips, 900 per case.
Example
Lake City 5.56mm Ammunition 30rd box on stripper clips
XM193CXM193 5.56 commercial package. American Eagle Tactical “Black Box,” 20 round box.
Example
Floral Dresses: American Eagle Xm193 Ammo
XM193CBPXM193 5.56, commercial package. American Eagle Tactical “Black Box”, Loose rounds in 200 round bulk (value) pack.
Example
223 Remington / 5.56 NATO-https://shopwilsoncombat.com/
XM193BLXM193 5.56 in a 100 loose packed box. ExampleFederal American Eagle 5.56 x 45mm
XM193BXXM193 5.56 in 20 rounds per box.
Example
5.56MM NATO 55 GR FMJ BT
XM193ML1
XM193 5.56 in an ammo can of 400 rounds.
Example
XM193BK420 AC1XM193 5.56 in an ammo can of 420 rounds
Example

All of these boxed rounds have the EXACT SAME kinds of rounds in them. It is purely a packaging difference. Take their word for it. Here’s a copy of their fact sheet on it:

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