Our BRT 16"OPTIMUM SPR upper should meet your needs nicely.
It is available with our Covert Comp, which is the best linear style muzzle device on the market.
The Wylde chamber and EXT gas system work together, allowing excellent performance even with hot loads like 77gr SMK Mk262.
http://www.blackrivertactical.com/co...egory=20819268
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