Da keymo 3 prong - Dead Air Silencers Key Mount Flash Hider 1/2x28

I own several of these and have installed many more. They come with shim, there's a predrilled hole if the device needs to be pinned. Using Rocksett or high temp loctite I have logged thousands of rounds on these devices with no failures or shortcomings. 3 prong design does a decent job at reducing flash signature.