Ah yes, the M4A1 from MW2019.
This one is actually styled after the original MW2 one though, hence the (2) in the addon's title.

And I know that there's already packs of overall much better MW2019 weapons that have been working on right now, which might render these weapons redundant, well the difference between those other than running on different bases is that these are using custom animations made by slogkot themselves, rather than actual in game animations.

slogkot took down most of their old addons as they think they're "bad" and "not worth our time" and therefore they are not worthy to be on their workshop page.

Well, I guess they're worthy enough on mine then.

Please be noted that this addon as a reupload, which means I'm not the original creator of this addon, but rather just the one who reuploads it back onto the workshop so that others can continue to use and enjoy.

Also, slogkot already stated that they won't hunt down or issue DMCA to any reuploads of their addons, just saying.

Credits :
slogkot/Fleshy Mammal - Original creator of the addon.
NeoLin - Reuploading the addon.