Description
Designed to excel in the most hostile combat environments, the ammunition 5,56×45 mm M855 (SS109) is the absolute reference for standard NATO assault rifles. Its technical 62-grain bullet, combining a tombac (CuZn10) jacket, a lead/antimony alloy and a steel penetrating core, guarantees superior terminal ballistics and optimal penetration of light armor at medium and long range.
Each cartridge is manufactured to the strictest military tolerances (NATO STANAG 4172 et AEP-97With its high-quality brass case (CuZn30), Boxer 4.4 primer, double-base powder, and UV moisture-resistant seal, this ammunition ensures an impeccable firing cycle and a time of action of less than 3 milliseconds, even at extreme temperatures ranging from -54°C to +52°C.
Key points and ballistics:
- MILITARY CALIBER: 5,56×45 mm (NATO Specification M855 / SS109)
- COMPOSITE OBV: 62 Grains (~4.0 g) – Steel Core + Lead/Antimony (PbSb)
- PERFORMANCE : Velocity of 920 m/s (± 20 m/s) measured at 24 meters
- ABSOLUTE RELIABILITY: Boxer 4.4 primer with UV-resistant seal included
- PRECISION : Maximum dispersion of 20 cm at a distance of 550 meters
- PACKAGING: Cardboard box containing 1500 cartridges (50 boxes of 30)
Official technical specifications
| Reference documents | NATO STANAG 4172 / NATO STANDARD AEP-97 |
| Bullet Type | M855 (SS109) CuZn10 |
| Warhead material | CuZn10 (MS90) + PbSb (Lead/Antimony) + Steel Core |
| Weight and Length of the Warhead | 62 grains (~4.0 g) / 23 mm |
| Case Type and Material | 5,56×45 mm / CuZn30 Brass |
| Cartridge Weight and Total Length | ~12.7 g / Max. 57.4 mm (Case length: Max. 44.7 mm) |
| Velocity and Dispersion | 920 ± 20 m/s (at 24 m) / Max 20 cm (at 550 m) |
| Pressure (Port / Barrel) | Port +3sd < 4450 bar / Port -3sd > 1050 bar |
| Action Time & Extraction Force | Max 3 ms / Min 200 N (20,4 kgf) |
| Powder, Primer & Sealing | Double Base / 4.4 Boxer / UV Seal Included |
| Operating temperatures | From -54°C to +52°C |
| Packing | 30 cartridges per box, 50 boxes per case (1500 in total) |
