Interesting in that, while no caliber was selected, odds of the Army going with anything other than 9mm would be slim to none, I would say. So then why did some companies submit pistols chambered in .40 or .357 SIG, when the higher pressure rounds lead to accelerated wear (as per the FBIs own conclusions)? Especially since they're now free to use hollow points, and the 9s give them capacity, faster follow up, compatibility with their allies, and less wear and tear?
The original competitors were:
Italy: Beretta will not enter the improved M9A3, instead competing with their new APX striker-fired pistol chambered in 9mm NATO and .40 S&W.
Czech Republic: CZ P-09 MHS chambered in 9mm NATO and .40 S&W.
Belgium: FN Herstal have entered with a striker-fired pistol for which no more details have been disclosed (rumored to be chambered in 5.7x28
Austria: Glock 17M and 22M chambered in 9mm NATO and .40 S&W, respectively.
Germany: Heckler & Koch VP9-M and VP40-M chambered in 9mm NATO and .40 S&W, respectively.
United States: KRISS USA announced its entry into the program using a variant of their Sphinx SDP platform chambered in 9mm NATO.
Switzerland: SIG Sauer P320 MHS chambered in .357 SIG.
United States: Smith & Wesson M&P G2 chambered in .40 S&W; in co-operation with General Dynamics Ordnance and Tactical Systems.
United States: Springfield Armory XDM chambered in 9mm NATO and .40 S&W.
United States: STI-Detonics Defense STX chambered in 9mm NATO
Brazil: Taurus PT24/7 OSS chambered in 9mm NATO and .40 S&W.
Germany: Walther PPQ M2 chambered in 9mm NATO and .40 S&W.
In January 2013, the Army released a Request for Information (RFI) to assess available handgun technologies and U.S. small arms industrial production capacity for the Modular Handgun System. The announcement seeks information “on potential improvements in handgun performance in the areas of accuracy and dispersion out to 50 meters, terminal performance, modularity, reliability, and durability in all environments.” The handgun should have a 90 percent or more chance of hitting in a 4-inch circle out to 50 meters consistently throughout the weapon’s lifetime. Ergonomic design should minimize recoil energies and control shot dispersion. Features include, but are not limited to, compatibility with accessory items to include tactical lights, lasers, and sound suppressors. Full ambidextrous controls are required and there is interest in ergonomic designs that can be controlled by female shooters.
The MHS requirement called for a non-caliber specific weapon with modular features to allow for the adaption of different fire control devices, pistol grips, and alternate magazine options. The weapon will fit various hand sizes and will mount targeting enablers using Picatinny rails. The new weapon will incorporate detection avoidance by having a non-reflective neutral color and will be operable with a suppressor in place
There is no specific caliber, but terminal ballistics at 50 meters through 14 inches of ballistics gel will assess lethality compared to M882 9mm rounds. Specific interest is given to pistols that can accommodate higher chamber pressures over 20 percent greater than SAAMI spec for the cartridge without degradation of reliability. The RFI calls for 2,000 mean rounds between stoppages, 10,000 mean rounds between failures, and a 35,000 round service life.
The Army wants a pistol and cartridge combination that will retain match-grade accuracy for 35,000 rounds, be able to handle significant pressure spikes, have increased lethality, and be very reliable with little recoil and limited wear.
Based on this, I think Glock is going to win. They have to replace the M9 as they're wearing out, and the Glock is already in use in some quarters AND Glock made a platform specifically for these tests in order to meet the requirements
These photos indicate that the next-gen Glock 17M has come a long way, incorporating an ambidextrous slide release, reversible magazine release and a re-profiled grip shape. The new model has a straight grip without fingergrooves and an enlarged, flared magazine well. The grip looks like it can accept add-on backstraps for larger hands. It also has a cutout at the front and redesigned magazine baseplate. This is probably to make it easier to remove stuck or jammed magazines.
Other changes include a new muzzle contour and a smooth trigger. There are more than just cosmetic changes here, too, as the 17M has a different pin layout and a new, enlarged recoil spring assembly. Glock also upgraded the finish, but exact details about that remain unknown.