Take either the 4.25” or the 5” OR both! 4.25” - vortex viper, 3 mags (17,21/26), 3.5lb tuned trigger and polished internals $1400 5” - Holosun 407c, 3 mags(17/21/26), 2 RDS plates, 3.5lb tuned trigger and polished internals $1400 Or both...