Indeed, a Recce configuration is not the best at anything. It wasn't designed to be. If you shoot High Power, it's useless. It is less then optimum for building clearing. It lacks the barrel length to hang with the SPR's past mid range, and the optic is generally not setup for 700m shots. It however, can do nearly everything adequately.
I could care less whether one uses a 10.5in barreled gun, or a 26in heavy monster. The original posters stated goals point to a specific configuration.
I have a feeling we'll see just who makes the best AR/M4 since Colt's time expired on the rights to the M4 TDP. It now belongs to the Army and test guns are being built probably as we speak.
The MIL and Colt worked together "tweaking" the M4 into what it is, not all companies use or can use the info. Now we will see...
Maybe, maybe not. If all goes as some plan there will be an open competition. If so it's doubtful the M4 as we know it will be selected.
Tracking on the 6920. It follows the TDP, and there is a reason for the TDP.
