[Bug]: Underbarrel weapons cannot be unloaded

[chief-turkler]

Complete the template below. Reports that do not follow the template will be deleted.
Title should be: [Bug]: (Short description of bug)

Specifications
Please provide the following.

Rimworld version: 1.5.4104
Combat Extended version: Development snapshot from ~20 minutes ago
Combat Extended source (Steam, GitHub, etc.): Github
Your operating system: Windows 11
Your mod list:

Do keep in mind that this instance was also replicated with HugsLib for the log attached below. I can confirm that the issue is present without HugsLib.

Description
Provide a concise description of the issue or concern. What happened?
Attempting to reload underbarrel weapons causes a red error. This issue can be replicated with the bare minimum mods and the generic ammo setting disabled.

I've been able to replicate this issue with multiple weapons from multiple mods. These include:
AKM + GP-25 from Combat Extended Attachments
Grenadier Service Rifle from the Generic Ammo Experience
Thundercat Rifle from Rimsenal Augmented Vanilla Pack

Expected behavior
What did you expect to happen?
The ammo loaded into the underbarrel attachment should be unloaded.

To reproduce
Provide clear steps to reproduce the behavior. How do we make this happen?

• Spawn in a weapon utilizing the underbarrel system.
• Switch to the underbarrel weapon.
• Reload the underbarrel weapon.
• Try to eject the ammo loaded into the underbarrel weapon.

Screenshots & log dumps
Whenever possible, add screenshots to help explain your problem, and share error or crash logs to make our jobs easier. For logs, please enter the logs into a pastebin site (e.g pastebin.com, justpasteit.com, etc.)
and provide a link. Do not paste the entire log here.

https://gist.github.com/HugsLibRecordKeeper/d4e0ab698bfae5dad6b38c506b0e1b9f

Complete the following checklist
I hereby verify that I have done the following:

• Confirmed that my game version and load order are correct.
• Confirmed that I am running the appropriate and most updated version of Combat Extended and required compatibility patches.
• Confirmed I am not running any mods with known incompatibilities with Combat Extended.
• Disabled Combat Extended and attempted to reproduce the behavior without success.