A few months ago, T.REX ARMS purchased a handful of Law Enforcement trade-in rifles. 
T.REX Newsletter

A few months ago, T.REX ARMS purchased a handful of Law Enforcement trade-in rifles. We don't tend to buy large quantities of the same gun, but this find was special. For some reason, an agency purchased Sig Virtus MCX's chambered in 300 Blackout and hardly shot them. Additionally, they had the government-only, black anodize color instead of the civilian grey or FDE. Once we got them in-house, we looked over each gun and verified that none had more than 100 rounds through them. The uppers and bolts still had factory finishes and the breach displayed little to no carbon or brass.

We are selling a few of these SBRs on Gun Broker and wanted to let our newsletter subscribers know. We will ship them uncleaned and as we received them. There are signs of transportation and handling on the externals, but the insides look very clean.

For more information on the guns, please see the listings on Gun Broker.