The XM7 rifle, XM250 machine gun and XM157 optic are now M7 rifle, M250 machine gun and M157 optic.
The article doesn't mention if the X has been dropped from the 6.8x51mm cartridges:
- XM1168 GPR: Ball round with hardened steel core. Capable beating armor plates of NIJ IV classification.
- XM1169 AP Sniper: Steel-cored match round for marksmen.
- XM1170 AP: Tungsten-core AP round.
- XM1184 AP: Improved "Special purpose" AP round.
- XM1184: AP round. Target penetration range of IV plate at 600m.
- XM1185 AP-T: Tracer version of XM11184.
- XM1184A1 APDU: Wartime version with depleted uranium penetrator.
- XM1185A1 APDU-T: Wartime tracer variant.
- XM1186 GPR: Improved ball round. Capable beating armor plates of NIJ IV classification at approx 400m range.
- XM1187 GPR-T: Second-gen ball round with tracer.
- XM1188 APFSDS: Tungsten flechette able to beat NIJ-IV armor from one klick away.
- Aeroshell SLAP: Full-bore AP round with thick polymer jacket offering SLAP-like qualities while being muzzle device-safe.
- Fury Match: Match-grade load developed by SIG for .277 Fury - civilian version of their entry.
- HAPI API: Ammo Inc. API load with large reactive incendiary charge.
- SIG WC UAP: Very potent SIG-designed AP round, supposedly able to defeat 25mm of RHA from one klick away.
- NM142 HEIAP: Downsized Raufoss-like multipurpose round.
The things the Army is going to regret about this rifle are the outrageous mass, stupifying cost per round and the accelerated wear associated with the insane chamber pressures.
This IS America, dammit, but there's limits to how much we can spend on an infantry rifle.