SIG Marksman rifle cartridges are engineered to excel in today’s precision auto-loading platforms, as well as bolt-action rifles. Utilizing optimized shell case metal-lurgy and premium primers, each round is precision-loaded using state-of-the-art, electromechanical monitoring for geometric conformity, and all are100% inspected.
| Bullet Weight (Grains) | 77 | 
|---|---|
| Caliber/Gauge | .223 REM/5.56 NATO | 
| Case Material | Brass | 
| Cost per Round | 1.45 | 
| Grains | 77 GRAINS | 
| Length | 4.4000 | 
| Manufacturer | Sig Sauer | 
| Manufacturer Part Number | E556M420 | 
| Units per Box | 20 | 
| UPC | 798681639267 |