B & T Firearms 20526 Brace Adapter Black Aluminum 3 Position, Fits B & T APC 223/300
https://www.tandktactical.com/shop/840225702286-b-t-firearms-20526-brace-adapter-black-aluminum-3-position-fits-b-t-apc-223-300-43561
https://www.tandktactical.com/web/image/product.template/43561/image_1920?unique=5708a30
B&T Telescopic Brace Adaptor For APC223/300 (US Version). Includes hydraulic recoil buffer.
