gritz55Ecco Machine made Griffin Long 1.375-24 Bravo Adapter for Plan A muzzle devices. These 1.375-24 Bravo (“ASR”, H.U.B.”) long or extra long Griffin taper mount (“Plan A” pattern) adapters protrude .7″ or 1.0″ behind the rear face of the suppressor, giving an extra ~1/2″ or ~3/4″ of muzzle device clearance versus a typical adapter that has a .2-.25″ thick flange. Long adapter specs: Material: 17-4 H900 Stainless Steel or 6Al-4V titanium Flange diameter: 1.5″ Flange thickness: .7″ Overall height: 1.15″ Weight: SS 2.3 oz, Ti 1.3 oz Installs with 1.5″ or adjustable hook type spanner wrench. We recommend the OTC 4791 adjustable spanner wrench or our non-marring polymer adapter wrench
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