SITIS Archives - Topic Details
Program:  SBIR
Topic Num:  SOCOM05-002 (SOCOM)
Title:  Door Breaching Ammunition
Research & Technical Areas:  Materials/Processes, Weapons

Acquisition Program:  
  Objective:  Develop ammunition, fired from a shotgun or the M203 40mm Grenade Launcher, to breach various types of doors that may exist in any country.
  Description:  USSOCOM has a need to develop better door breaching capabilities. Doors in the current Area Of Responsibility (AOR) may be constructed from, but not limited to, solid wood of varying thicknesses, metal over wood, metal, wooden frame, metal frame, various door handle and lock combinations. Current procedures include use of various shotgun munitions fired from different 12 gauge magnum shotguns. A 40mm round would give shooters the capability to breaching a door from a distance. If a 40mm round can meet this requirement a shotgun would only be required when near the target door, such as may occur when breaching a door in an inner hallway or room. Both the 12 gauge and 40mm rounds must be safe to the shooter employing it in the normal shooting mode, and safe for anyone that is at least 3 feet from the enemy side of the door. The recoil cannot exceed current system recoil. The Computed Recoil Energy must not exceed 60 ft-lbs. Reference US Army Combat Systems Test activity, Aberdeen Proving Ground “Safety Evaluation of Hand and Shoulder Weapons” dated 1 March 1977, TOP 3-2-504. Ammunition would be fired from various 12 gauge shotguns or the M203 Grenade Launcher and shall be able to breach various door types. The target door should be wooden and at least 2.5 inches thick or thicker, with heavy duty hinges and deadbolt. A shotgun breaching round must completely remove one hinge with one shot. When used against the deadbolt, one shot must remove the deadbolt or catch. The normal shooting mode is for the shooter to place the barrel from 0 to 2 inches from the target. No lethal fragments should enter the room. The normal shooting mode for a 40mm breaching round would be to fire at the door from 20 to 300 feet. The round should completely remove the door, or at a minimum break off half of the door. If no vendor can meet the current requirements for the 40mm round, we will consider a round that can be fired from a side-loading grenade launcher. A side-loading grenade launcher has the advantage of accepting rounds of any length.

  PHASE I: Design an affordable 12 gauge or 40mm round capable of breaching various door configurations. Conduct limited testing to demonstrate capabilities and limitations.
  
  PHASE II: Fully develop and characterize how the ammunition functions in various weapon configurations (various barrel lengths, various chokes, etc.). Tests should include an independent determination of effectiveness and safety. Verify effectiveness and functional performance under a variety of test environments.

  References:  
Keywords:  Ammunition, Shotgun, Weapons, Door Breaching, 40mm Grenade Launcher, M203.

Additional Information, Corrections, References, etc:
Ref #1: TOP 3-2-504.pdf

Questions and Answers:
Q: 1. Since the "Computed Recoil Energy" must not exceed 60 ft-lbs, how can I obtain a copy of “Safety Evaluation of Hand and Shoulder Weapons” dated 1 March 1977, TOP 3-2-504, so I can compute the recoil energy?
2. Are 3-1/2 inch magnum shotgun shells acceptable, or should the length of the shells be limited to 3 inches?
3. This maybe a little off topic, but what are the deficiencies of the current M-1012 and M-1030 breaching rounds? What don’t they do, that they should? (Shear off enough screws?) What do they do, that is objectionable? (Over penetrate? Ricochet back at the operator?)
A: 1. The requested document is posted on SITIS in PDF.
2. Magnum shells are acceptable.
3. The issue with the current ammo is that it does not consistently
remove hinges with a single shot. Unfortunately, I don't know much
about Iraqi doors/hinges.
Q: Please disregard question (1) because I found TOP 3-2-504 at the Defense Technical Information Center.
A: . . . response pending . . .

Record: of