.458 SOCOM
Overview
The .458 SOCOM (11.63×40mm) is a moderately large round designed for a specialized upper receiver that can be mounted on any AR-15 pattern lower receiver. The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ftlbf (3,261 J), similar to a light .45-70 but with a much smaller case. Prompted by the lack of power offered by the 5.56 NATO cartridge used in the M4 carbine and the M16 rifle, the .458 SOCOM came about from informal discussion of members of the special operations command, specifically Task Force Ranger's experience that multiple shots were required to incapacitate members of the opposing force in Mogadishu during Operation Gothic Serpent. Many Somalis would chew the drug Khat all day and the effects of the drug would both curb their appetite (in a country plagued by famine) and increase their pain tolerance.
Stats
| Ammunition Type | Damage | Bullet Velocity (m/s) | Barrier Penetration | Armor Piercing |
| 255gr Match | 580 | 2.3 | 8 | |
| 300gr Match | 540 | 2.3 | 8 | |
| 100gr CQB | 914 | 1.75 | 7 | |
| 500gr Subsonic | 320 | 2.5 | 5 | |
| Lehigh CF | 299 | 1.2 | 5 | |
| High Velocity SLAP | 762 | |||
| Incendiary Spotter | 490 | 1.4 | 7 |