Update:
Worked on the XM-218's for the windows of this build. I am using the kit provided machine guns and cross bars for this build. I did purchase some upgraded brass barrells and barrell jackets for the guns. This will be the part of the gun most seen as it sticks out of the crew door and gunners window. I do see there are some nice aftermarket .50 cals out there in resin in 1/48th scale. The ones I researched and eventually purchased are actually GAU-16's molded in a soft cradle ( i.e. recoil attenuation) they are used by our UH-1N platforms and we do not have these in the CH-53D/E community. Our guns were at the time of this particular CH-53E depiction, rigid mounted, i.e. plain pintle and yoke assembly no recoil attenuation. Mounted on a crossbar pinned to the wall mounted gun mounts. Lots of vibrations and wear put into the airframe due to these .50's being mounted in the way there were.
Today in the entire fleet of CH-53E, CH-53K, UH-1Y, MV-22B we utilize the new GAU-21 .50 cal produced by FN Herstal in Belgium. All of the installations utilize the FN cradle system which provides recoil/counter recoil attenuation. Extremely lower vibration loads transmitted into the airframe, much higher rate of fire, and 300/600 round ammo box options vice single 100 rnd cans.
I have yet to find these in 1/48th scale in an aftermarket resin, but I am keeping my eyes out.
Heavyarty, Gino pointed me in the right direction for some really great 1/35th scale GAU-21's as well as other armament I need fo rthe UH-1N model thats on the bench now.
after removing the kit barrell, I used my pin vice with a .06 drill so I could fit the new parts.
some gun metal MM, and a light wash of titanium MM metalizer
The receivers are not the best looking, and there is a wolfpack upgrade set I am trying to source, that has some nice gun upgrades in it, so when I get that I will for sure include that build in my next 53E.
The glosscoat is dry and decaling shall commence.......if I can find those damn reading glasses......