The interior contains the ejection charge, the ignition charge, the flare canister and its parachute. The parachute is housed in a metal-sided tube that is in two halves.
At the time selected, the fuze functions to ignite the ejection charge, which in turn ignites the ignition charge.
The ejection charge builds up pressure which forces down on the flare canister and the tube halves.
The three shear pins then break to allow the baseplate, the flare parachute and the canister to eject, with the baseplate moving to one side because of its unbalanced state.
As this is happening, the ignition charge ignites the flare compisition, which is magnesium and sodium nitrate bonded by a resin.
| ROUND | |
| Type: | Half-crimped, illuminating |
| Model: | M314A3 |
| Length: | 820 mm |
| Mass: | 21.0 ÷ 21.5 kg (including cardboard case) |
| PRIMER | |
| Type: | Percussion |
| Model: | M55A |
| Length: | 820 mm |
| PRESENTATION OF THE PRODUCT | |
| 1 round in watertight carboard case | |
| 2 cardboard cases in wooden case | |
| Cases with 2 rounds: | |
| Weight: | 54 kg |
| Lenght: | 944 mm |
| Width: | 308 mm |
| Height: | 196 mm |
| Volume: | 0.057 m3 |
| PROJECTILE | |
| Type: | Illuminating |
| Body material: | Forged steel |
| Length: | 390 mm (without fuze) |
| Marks: | White w/black markings |
| Mass: | 14.7÷15.2 kg (with fuze, depending of the weight zones) |
| PROPELLING CHARGE | |
| Type: | Single base |
| Designation: | M67 |
| CLASSIFICATION | |
| ONU No.: | 0171 |
| Group: | 1.2 G |
| NOC: | 1315-33-002-2006 |
| CASE | |
| Model: | M14 |
| Material: | Brass |
| Length: | 372 mm |
| Mass: | 2.68 kg |
| RANGE | |
| Approximate max. range: | 11,270 m |
