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Rugged Suppressor OA006: The 3 Lug Adapter features the patented Go/No Go Gauge. The No Go/Go Gauge provides confirmation that your suppressor is properly attached, for a surprise-free shooting experience. The 3 Lug Adapter is compatible and used in conjunction with OSS's 3 Lug Mount. This adapter is made to 9mm HK spec and is not compatible with 45 ACP.
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