Rugged 3 Lug Adapter features their 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 our 3 Lug Mount. This 3 Lug Adapter is made to 9mm HK spec. and is not compatible with 45ACP.
Threaded in 1/2"-36 TPI for pistols and sub guns with this thread pattern.