BudsGunShop.com - Muzzle fitting

NO, will ONLY fit muzzle devices with AAC 51-tooth mounts such as AAC 51T Blackout Flash Hider. Standard birdcage on Ruger or S&W ar 223 rifles will NOT WORK. I hope this helps!

That device is compatible with this muzzlebrake
https://shop.advanced-armament.com/aac_en_us/blackout-51t-muzzle-brake.html
Which right now is only in stock in 7.62

Bill, no Sir. This only Fits Any AAC 51 Tooth Ratchet Mount Compatible (not caliber specific). The Ruger or S&W Rifles can use this Linear Compensator which diverts blast and sound forwards as well : budsgunshop.com/product_info.php/products_id/712016458/ultradyne+556+athena+linear+compensate+1%2f2x28

No this is intended for specially designed AAC 51T muzzle brakes or 51T compatible devices from other brands but not factory flash hiders. Mostly designed to redirect sideways muzzle blast from muzzle brakes which is much less of a problem with most factory muzzle devices that aren't brakes.