The Orthogon parts from McShay Mod Pack are a bit of a mess, the upper has its own bolt that we never get to see due to it not removing the original bolt, they leave a gap when used with other receivers, and they're a bit "too far forward," so to speak.
Goes in mod_overrides
Changes:
The AMCAR now uses a detachable carry handle with the upper equipped
The ejection port on the upper is larger, probably wasn't necessary but I always thought the scrunched up ejection port was weird
The standard bolt was removed so the built-in one can be seen
The receivers now properly aligned with other receivers, and they no longer partially clip into some handguards
The AMR-16 now uses Cynosura Iron Sights with the Orthogon Handguard equipped
The Plated AR Magazine has been scaled down to the size of other CAR magazines
New black market icons that are more in line with the older black market icons