We�ve heard your call for a QD option for our popular Ultra Compact Suppressors. So we proudly offer The Mod-1 line up. The Mod-1 is a modification of our extremely durable Ultra Compact Suppressor line up. Like their predecessors the Mod-1 line up is rated for magnum hunting calibers like 375 H&H or 338RUM. The Mod-1 line up has improved thermal dispersion thicker wear surfaces and can be configured to fit any aftermarket QD set up with 1.375-24 threads. Each Mod-1 suppressor will ship assembled with a Rearden Manufacturing Atlas (HT) ASR threaded mount and SPB (HT) Muzzle Device. - 1 5/8 Diameter - 5 � Long - NO BLOWBACK through the charging handle - Made from 416 Stainless - No Barrel Restriction - Full Auto Rated - Cerakote High Temp Black