b'CHECKMATE-HD*EZ-LOK adapter includedLENGTH.5.04 DB SPL115.4dB @muzzle, 119.65dB @ear .22LRWEIGHT.5.8oz MATERIAL.PVD & Type III Hardcoat AnodizedDIAMETER1.07 MSRP$459.99CALIBER5.56mm RATED FOR.22 calibers up to 5.7x28The CHECKMATE-HD comes with an EZ-LOK 1/2x28 barrel adapter and is field ready out of the box. The only supporting accessories outside of various threaded EZ-LOK barrel end couplers (barrel adapters), are the CAM-LOK rear mount (with associated CAM-LOK barrel adapters in various thread pitch options), and the Direct Thread Adapter 1/2x28, making this suppressor very simple and straightforward for end users to understand and utilize. 119'