The Cadex MX1 Muzzle Brake is designed to deflect the muzzle blast away from the shooter and his spotter. Gases exit sideways and upwards to reduce felt recoil, and dust clouds and improve rifle control. It will soften your 338 Lapua recoil as if it was a 243 Win. Self-timing design using a pinch bolt. Cadex Defense Cadex MX1 Muzzle Brake Olive Drab Green for 50BMG (1-14 thrd) 3850-044-ODG