Dead Air DA204 Front Cap R-Series 7.62mm
https://www.tandktactical.com/shop/810128160933-dead-air-da204-front-cap-r-series-7-62mm-40545
https://www.tandktactical.com/web/image/product.template/40545/image_1920?unique=44cbf8c
This front cap allows to fine-tune the sound performance, flash mitigation, and backpressure of the silencer.
