Builder Boxes

DSI Builder Box – MOE & Typhoon Configurations

New to AR-15 building? Start here. The DSI Builder Box is your all-in-one kit for constructing a full-featured DS-15 rifle—minus the serialized lower receiver. Designed for learning, upgrading, or customizing your next build, this box includes everything needed to complete either a DS-15 MOE or DS-15 Typhoon 16" rifle, in your choice of standard or fixed magazine configuration.

Whether you're in a restrictive state or just want the satisfaction of assembling your own firearm, the Builder Box delivers a complete parts package with premium components—all shipped directly to your door.

  • Available for residents of all 50 states
  • Includes all parts needed for your build except the lower receiver
  • Ships directly to you—no FFL required for the kit itself
  • Choose between:
    • DS-15 MOE – 16" Black, Standard or Fixed Mag
    • DS-15 Typhoon – 16" Black, Standard or Fixed Mag
  • Complete your build with confidence using 100% U.S.-made parts that are proven to all work well together

IMPORTANT: If you complete your build using a DSI lower receiver, your rifle will be backed by DSI’s transferrable lifetime warranty.

If you are an instructor or armorer that gives build classes you may, apply to become a dealer.

Proudly made in the USA