US Tri-Service Designation System

M = Guided Missile (Standard Designations)

• MQM-178 Firejet: High Speed Aerial Target built by Griffon Aerospace, KRATOS Defense & Security Solutions, Trideum Corporation, and Kord Technologies, Inc. for the US Army.

• Lockheed Martin AGM-179 JAGM: Joint Air-to-Ground Missile for the US Army, US Navy, and USMC, to replace the BGM-71 TOW, AGM-114 Hellfire, and AGM-65 Maverick missiles.

• Lockheed Martin AGM-180 LRSO: Losing contender in the USAF Long Range Stand Off Weapon program to replace the AGM-86 ALCM.

• Raytheon AGM-181 LRSO: Winning contender in the USAF Long Range Stand Off Weapon program to replace the AGM-86 ALCM.

• LGM-182: Designation apparently skipped, see LGM-35 below.

• Lockheed Martin AGM-183 ARRW: Hypersonic AGM for the USAF Air-Launched Rapid Response Weapon program, cancelled in March 2023.

• Kongsberg RGM-184 NSM: Naval Strike Missile acquired by the US Navy for use on littoral combat ships and by the USMC for use on land-based mobile launch platforms.

• QinetiQ MQM-185: Proposed Banshee Jet 80+ High Speed Aerial Target for the US Army, but it is unclear if any were acquired.

• MQM-186: RedWing sub-scale aerial target for the US Army Air Defense Artillery Targets program, possibly built by Griffon Aerospace. Little information availabe, see for example this PDF.

• Lockheed Martin AGM-187 JAGM-F: Unconfirmed designation of Jont Air-to-Ground Missile - Fixed Wing. This appears to be a future development of the AGM-179 JAGM, specifically intended to replace the AGM-65 Maverick. As such, it could possibly receive an AGM-179 type designation instead.

• 188: Possibly the next available numerical designation, in standard numerical sequence.

M = Guided Missile (Non-standard, Out-of Sequence Designations)

• Northrop Grumman LGM-35 Sentinel: Ground Based Strategic Deterrent ICBM in development to replace the LGM-30 Minuteman III for the USAF. The designation LGM-182 was originally allocated, but was changed to this out-of-sequence designation (which conflicts with the out-of-service Radioplane/Northrop AQM-35) for unknown reasons.

• Lockheed Martin AIM-260 JATM: Joint Advanced Tactical Missile for the USAF and US Navy to supplement and replace the AIM-120 AMRAAM. It is unclear why this out-of-sequence designation was assigned.

R = Unguided Rocket (Standard Designations)

• Naval Weapons Center GTR-18 Smokey Sam: Surface-to-air visual threat simulator rocket.

• BAE Systems AGR-19 APKWS II Advanced Precision Kill Weapon System for the USMC based on Hydra 70 rocket.

• BAE Systems AGR-20 APKWS II Advanced Precision Kill Weapon System for the USAF based on Hydra 70 rocket.

• BAE Systems AGR-21 APKWS II Advanced Precision Kill Weapon System based on Hydra 70 rocket.

• 22: This appears to be the next available numerical designation, in standard numerical sequence.

Additionally, there have been numerous undesignated missiles and rockets tested or used by the US military, some of which are noted at Designation-Systems.net