Add a correct, service-pattern 40mm training piece to your collection or armorer’s kit with this 40mm M922 High Velocity Dummy Round. Designed to simulate a live 40×53mm high-velocity HE cartridge for the MK19 grenade machine gun, the M922 dummy is a completely inert round used for function checks, loading drills, and crew training.
Each M922 dummy round replicates the size, shape, and weight of live 40mm high-velocity ammunition. The fixed round features a solid aluminum projectile with a copper rotating band, crimped into a steel cartridge case—matching the profile and feed characteristics of service HE rounds so that cycling and handling are realistic without any explosive risk.
These are surplus dummy rounds, offered in three graded conditions.
Historical Background – M922 Dummy for the MK19
The 40mm M922 (and later M922A1) High Velocity Dummy Cartridge was developed specifically for the MK19 40mm grenade machine gun and compatible 40×53mm platforms. In U.S. military use, these dummy rounds are:
- Totally inert – no primer, propellant, or explosive filler
- Used to check gun functioning and timing
- Issued primarily to armorers and training units for crew drills
In service, M922 dummy cartridges are typically joined with M16A2 disintegrating links and issued in 10-round belts as a training set for the MK19, associated with DODIC B472 in ammunition documentation. They allow units to train loading, unloading, clearing, and cycling procedures without expending live ammunition or risking damage from improper drills on live rounds.
Technical descriptions of the M922 family note that the dummy simulates a loaded 40mm HE round in size, shape, and weight, using a solid aluminum projectile with a copper rotating band, with the case crimped around the projectile. Many examples also have small drilled holes in the case body for positive identification of the dummy.
About These M922 Dummy Rounds
- Caliber: 40mm High Velocity (40×53mm)
- Type: Inert dummy cartridge for training and function checks
- Construction:
-
- One-piece aluminum projectile with copper rotating band
- Steel cartridge case crimped to the projectile body.
- Inert primer pocket (often sealed or filled)
- Some cases include small drilled holes for a clear dummy ID.
Because these are genuine used training rounds, cosmetic details will vary widely from piece to piece. That makes them ideal for realistic training loads and for collectors who want examples that show authentic service wear.
Grading and Condition – Grade 1, 2, and 3
To make selection easier, these M922 dummy rounds are sorted into three grades. All are completely inert; grades refer only to cosmetic and physical condition.
- Grade 1 – Best Overall Condition
-
- Strong, intact profile with better paint and markings where applicable
- Minimal corrosion or staining
- The rotating band and case show lighter wear from handling and linking.
- Ideal for display, collection, and high-visibility training setups
- Grade 2 – Good Service-Worn Condition
-
- Obvious finish wear, scratches, and handling marks
- Markings may be faded, partial, or missing in places.
- May show small dents, dings, or staining consistent with repeated training use
- Excellent for armorer’s dummies, classroom use, or “field-used” displays
- Grade 3 – Heavily Worn / Rough Condition
-
- Significant wear and tear with heavy finish loss
- Markings may be mostly gone or entirely absent.
- May have small drilled holes, more noticeable dents, or surface corrosion
- Perfect for budget-conscious training sets, cutaway projects, or “been there, done that” style displays
Important: These are dummy rounds. The exact round you receive may differ from the photos in paint, markings, the presence or size of drilled holes, and wear patterns. All are sold as inert, non-firing training and display cartridges only.
NSN / NIIN / DODIC Reference
For historical and catalog reference, the M922 / M922A1 dummy family is associated with the following identifiers in U.S. military documentation:
- DODIC / DODAC: B472 – 40mm Dummy Cartridge, MK19 training belts
- NSN (early XM922 / related dummy): 1310-00-169-5421 (NIIN 001695421) – 40mm dummy cartridge M385/XM922
- NSN (M922A1 Dummy): 1310-01-369-4705 (NIIN 013694705) – 40mm M922A1 Dummy Cartridge
Ideal For
- MK19 and 40×53mm display setups needing correct dummy belt fillers
- Armorers and instructors building inert training belts for loading and function-check drills
- Collectors of modern U.S. ordnance who want authentic high-velocity 40mm dummy cartridges
- Galleries, man-caves, and shop displays where realistic, safe 40mm rounds complete the look of a heavy weapons collection
This 40mm M922 High Velocity Dummy Round offers an authentic way to simulate the appearance and handling of live MK19 ammunition—while remaining completely inert and safe for training, demonstration, and display.
Approx length 4.5", Approx width 2", Approx weight .8lbs.
Pictures are of the actual item you will receive.
Please visit our page about order lead times here: Order Lead Times
