MG36 KV with Extended mags, Muzzle break and a 1x-4x Phantom scope.
I loved this gun. It does not have the same run and gun potential as the M249's but it is absolutely silky smooth when it comes to precision.
AR-21 C with Muzzle Break.
Even with the Muzzle Break I would have to say this gun is not recommended, it simply has too much recoil to be effective outside of strictly Close Combat. I mean you could really get used to using it (and learn to use the Burst Fire mode) to start hitting those long range shots but even then the recoil feels exceptionally strong. And not to be dismissed but this gun literally DRINKS AMMO. It GULPS IT DOWN.