Upper Receivers & Conversion Kits

We have the Upper Receivers & Conversion Kits products you need to help improve your setup, enhance safety, improve consistency, and better organize your operation. Thanks for taking time to reach the Upper Receivers & Conversion Kits department of FS Bullets & Brass. Top selling products from the Upper Receivers & Conversion Kits department are listed on this page. Click links below to browse more products from this department.

Products in the Upper Receivers & Conversion Kits department change frequently as manufacturers release new products and discontinue old products. Give us your email address or phone number through the box below to be notified when something changes.