no accurate FPS games

[jdun]

The AR15 rifle has the best ergo. The controls are simple. It has a safety, mag release, and bolt catch that is easy to reach. The charging handle is ambidextrous.

The grip angle and control of the AR15 has been copied by many rifles such as Sig 556, SCAR, Masada, Massoud, etc.

The worst ergo design goes to the AK and G3.

Submachine guns are primary weapons. Secondary weapon are pistols and knives. You can have a rifle and submachine but that doesn't make the submachine gun a secondary weapon. It still considered a primary weapon.

Here the thing about the P90. FN spend 10 years trying to sell it to the Europeans. It failed. So they went to the USA and have some limited success. The FN P90 filled no void. SBR AR15 does everything better and without the awkwardness of changing the magazine of the P90.

You don't conceal PDW or submachine, or any SBR primary weapons. The compactness allows the operator in and out of the vehicle without any hindrance.