Mr 37mm is dedicated to providing quality 37mm products for sale to Police, Military and Civilians.  We also Provide information for 37mm launcher owners on how to register your 37mm as a destructive device ,  where to obtain hard to find ATF forms, and lets not forget the laws, rules, and regulations.  If you have a question that isn't posted or answered on our site, simply contact us , or post the question on our forum below  and we will do the research and find you an answer.  We also test and post videos of 37mm munitions  (including anti-personnel munitions), adapters and launchers being fired so you can see it before you buy it.  

Have fun, stay safe, and happy launching!!

Mr. 37mm