556 Ammo - MK255

[pco]

Hey there,

I was browsing armslist and I came across this ammo posted for sale in my area. I haven't heard much about this ammo but it seems like the ad is saying that this is hard to come by. Has anyone used this ammo in the past? is it worth the hype or is it more of a collectors item? It is hard to find any good information on this online, any feedback would be appreciated!

Thanks!

Link to armslist posting:

https://www.armslist.com/posts/13408981/knoxville-tennessee-ammo-for-sale-trade--556-ammo---mk255-

[Static_USMC]

Welcome to TGO!  
It seems to be a heavier frangible.  Most frange tend to be on the lighter side because bullet length starts getting long with tin/copper alloys as weight goes up.  If I remember correctly the mk255 is a copper / polymer mix.

$1 per round sounds cheap for anything that starts with “MK” and ends .mil

I had someone offer me $3 a round for 855A1 last year.