This spacer disables the movement in the Nielsen device so the Osprey can be used with guns with fixed barrels. Made from 17-4 stainless steel then heat treated for maximum durability.
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ADVANCED ARMAMENT COMPANY 65011 Flange Indexing Direct-Thread Adapter 5/8″-24 tpi, Muzzle Brake Design, 1-3/8″-24 tpi Socket
$97.99
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