The Gemtech Threaded Rear Mount Adaptor for GM-45/LUNAR-45 5/8-24 Thread provides a Matte black, corrosion-resistant adaptor designed to extend the versatility of Gemtech GM-45 and Blackside suppressors by enabling their use on fixed barreled weapons with a precise 5/8-24 thread configuration. Built as a dedicated adaptor, it is finished in a durable matte black and is specifically calibrated for 300 AAC Blackout applications, accommodating subssonic ammunition to maximize suppression performance and maintain reliable cycling in compatible rifles. This adaptor is engineered to fit GM-45 and Blackside configurations, offering a straightforward installation that preserves the integral balance and durability of the suppressor system while broadening platform compatibility. Whether youre integrating a suppressed setup for closer-range hog control, precision nighttime hunting, or field testing across fixed barreled rifles, the adaptors robust design ensures a secure connection, consistent gas seal, and minimal point-of-impact shift when switching between configurations. By leveraging Gemtechs trusted engineering, shooters can maintain reliability, reduce impedance, and optimize noise reduction with a tool specifically tailored for 5/8-24 threaded GM-45/Blackside suppressor applications in 300 AAC Blackout with subsonic rounds.