I am also interested in this! I have been trying to find companies to buy from for my 458 socom/300 black out AR. I have a multi lower and wanted to have some exotic ammo go through it so i choose to go with two uppers for one lower and those calibers have to still utilize the AR 15 Mags with little or no modifications. wilson and RRA? what other companies might there be? what parts would you mix and match for the best selection? Upper receiver? Bolt carrier? Barrel? Is there alot of barrel length opitions? maybe suppressible?
Last edited by K_K; 03-23-13 at 12:09.
The sword sang on the barren heath,
The sickle in the fruitful field:
The sword he sang a song of death,
But could not make the sickle yield.
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