if Merit was what you are going by then the M4A1 carbine would be the best gun of the lot. In real world performance the M4A1 excels at everything, it is the evolution of the M16 made lighter and compact to be used in more circumstances. It is a deadly accurate gun and you can chamber it in 5.56x45 or 7.62x39 Nato rounds depending on the circumstances needed. To many versions of the same gun, the M4, Semi and A1 are the same thing, the M4A1 is the standard military version and has all three optional fire modes, the FN SCAR L is all the same gun, you can take out 4 guns and maybe add two new guns like the SKS, AK 5C, UMP .45, CX8
Can the masada be renamed also, It no longer goes by that name now that Remington owns its development. It is now reworked and modified into the ACW-R.