C5Mech83

Ok, I know this is not a Full Auto, But all the parts are available to build one of these up under a form 1 short barrel riffle. My question is has any done this, what problems did they have, any good source for plans any design issues I need to submit to the ATF. I Currently own two registered Stens. A MkII and MkV but am looking to try a new project. Any help would be appreciated. If there is a better form to post this question to please let me know. Thanks.