horrible product idea, and the internet trolls responded beautifully. Read the question and answers and the reviews. LOL!
http://www.amazon.com/Tufforce-Muzzle-Picatinny-Granted-MT-4L65R/dp/B0121DR6KA/ref=sr_1_fkmr0_1?ie=UTF8&qid=1451446873&sr=8-1-fkmr0&keywords=quad+rail+flash+hider
http://www.amazon.com/Tufforce-Muzzle-Picatinny-Granted-MT-4L65R/dp/B0121DR6KA/ref=sr_1_fkmr0_1?ie=UTF8&qid=1451446873&sr=8-1-fkmr0&keywords=quad+rail+flash+hider