The article covered is about the Sig Sauer p320 pistol that's being selected to be the m17 service pistol the navy and the marine Corp have chosen to adopt the weapon as well smaller compact model.

You would think certain weapons systems could be used across all 4 major branches.
The more you make of something the less expensive it becomes to manufacture.
When I was in Berlin our primary training was focused on Military Operations On Urbanized Terrain.
I believe their should be brigade sized units and even division sized units trained in key forms of warfare. Urban, conventional, jungle, desert, and mountain with specific weapons and equipment designed for each war fighting environment.
Part of what we did in Berlin was school other units stationed in Europe in urban warfare.
I envision a scenario where the specialized units would provide cross training to each other.

They are starting to do that on some degree the divisions are starting to look towards being round out divisions likes the 25th ID where they have brigades that bring different skills to the table like 2nd and 3rd are light infantry jungle operations even air assault capable, 1st is Stryker mech unit while 4th is airborne mountains and cold operations. The army has already kind of starting looking to this as the blueprint for the army divisions of the future.

Point taken sir I have been reading up on the faults of the Sig p320 and the program sounded heavily rushed and not very mismanaged especially with the problem of accidental discharge is a huge oversight.