We have found that we are really beating up the suppressors on the short barrels, especially the 11 and below.
Gas piston is a help when suppressing just for its tunable nature too and does keep some if that crud away from you.
A good muzzle break makes a HUGE difference, honestly until you try a few yiu may not believe it but its true.
My favorite AR we have right now is a 11.5inch one. We usually keep it suppressed just because the thing is so loud. But even in 3 round burst its a decent balance of accurate but still short.
07 Manufacturer and 02 SOT and 08 Importer.
NRA Certified Instructor Pistol/Rifle. NRA RSO.
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