Which M102 105mm component is externally threaded at the muzzle to screw into the blast diffuser?

Which M102 105mm component is externally threaded at the muzzle to screw into the blast diffuser?

• A. Blast Diffuser
• B. Recoil Cylinder
• C. Common Launch Tube
• D. Tube

Answer: (D)

At the muzzle, the connection is a threaded metal interface that allows the blast diffuser to be screwed on and held in alignment with the bore. The piece that has those external threads is the tube, which forms the forward end of the barrel assembly. The diffuser screws onto this tube using matching internal threads, creating a gas-tight front end and keeping the diffuser properly aligned with the bore. The recoil cylinder is part of the gun’s recoil system and sits back from the muzzle, so it doesn’t provide or receive the muzzle threading. The common launch tube is a separate assembly and isn’t the piece that mates with the blast diffuser at the muzzle.

At the muzzle, the connection is a threaded metal interface that allows the blast diffuser to be screwed on and held in alignment with the bore. The piece that has those external threads is the tube, which forms the forward end of the barrel assembly. The diffuser screws onto this tube using matching internal threads, creating a gas-tight front end and keeping the diffuser properly aligned with the bore.

The recoil cylinder is part of the gun’s recoil system and sits back from the muzzle, so it doesn’t provide or receive the muzzle threading. The common launch tube is a separate assembly and isn’t the piece that mates with the blast diffuser at the muzzle.