Product News & Updates ULC Muzzle Brake Shroud Install Video March 16, 2016March 18, 2016 by innovate Share on Facebook Share Share on TwitterTweet Share on Google Plus Share Share on Pinterest Share Send email Mail Print Print 300 Blackout3085/8-24 threadAR15CustomLock NutLR308M4Muzzle BrakeshroudTactical Low Concussion