Warhead has adjustable tuning nozzles that eliminate muzzle jump and reducing linear muzzle movement. This is a full auto video without holding front of gun down.
www.warheadprecision.com
https://www.facebook.com/profile.php?id=100077130892102&mibextid=ZbWKwL
Sizes : 1/2×28 and 5/8×24
WarheadTM Muzzle Brake/linear compensator sends sound and concussion downrange. Promo price
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