Need help or direction how to go about converting a BushMaster Carbon 15 pistol to a shoulder fired weapon (basically adding a shoulder collapsible stock).  My question is not how to convert the weapon that’s the easy part. What do I need to do to comply with the law (BATF)? What forms to complete, money, etc. I want to do this legally. If you can help I would appreciate the information. Thanks in advance.

coppercollarworker

If you are leaving on a barrel less than 16" long you'll need to do the paperwork for a SBR BEFORE adding a stock.

You'll need two Form 1s signed by your CLEO, two fingerprint cards, and a certificate of compliance. Send all of that along with two photos and 2 one hundred dollar bills to the BATFE. Wait about 4-6 months and then add your stock.

Download your forms here www.atf.gov/forms/5000.htm