So, they are often put on shorter barreled rifles, and rifles used for cqb in confined spaces. If that is a concern stick to a flash hider, Vortex from Smith is still IMO the king but these Dead Air flash hiders along with YHMs phantom and a few others do a pretty good job of suppressing flash even if you don't take advantage of their suppressor mounting ability. Diverters are to focus the direction of the blast forward, to reduce the concussion and sound felt/heard by the shooter, and anybody right next to the shooter. it cant be beat Compare 3 1/7 twist barrel for this build 3 SBR and Pistol. Agreed, indoor nothing other than a can will help and the only downside to many of these flash cans are exactly that, the flash indoor or at night will be enhanced by them. The Del-Ton AR-15 Upper Receiver Assembly is made of durable, reliable and. Since the Sandman K is still pretty loud on the 5.56 guns I mainly use it on the. The only downside as the name Pyro implies, its a firebreather even in broad daylight. Forward Controls Design 63 Style AR-15 Flash Hider For Dead Air KeyMo Price: 95.00 See Product Details The KeyMo muzzle device offers the ultimate tactical performance. Doesn't help with the noise, only the can does that but it really does help with the felt recoil and follow up shots. When I just want a softer shooting gun, on goes the Pyro. Their flash hider underneath works pretty damn well on its own with the 10.5 barrel and 5.56. Join us on Facebook and get recent news about our new products and offers. I'm running Dead Air's Pyro and Sandman K. MI AR-15 BLAST DIVERTER, Midwest Industries, 1/2-28' THREADS 5.56/.223.