The FPM Nein is a 7 inch fully welded suppressor that is perfect for 9mm carbine or pistol. A direct thread 1/2-28 adapter is provided to directly thread the suppressor to a host firearm. The FPM Nein is threaded to accept a 1 3/8-24 quick attach mount, it will work with booster devices threaded for that thread pitch. The FPM Nein is offered in both 17-4 stainless steel and titanium. The 17-4 FPM Nein comes in at 10.5 oz and the titanium FPM Nein comes in at 8.5 oz. FPM Gunworks Silencers N936SSFDE FPM Nein 36 Cal 1.60" Flat Dark Earth 17-4 Stainless Steel.