Swiss Sturmgewehr 57

Available on my Sketchfab:
https://sketchfab.com/3d-models/swiss-sturmgewehr-57-fbbef79255864a19acd36eb4e0288e76
The STG57 (aka the SIG 510) was the standard issue battle rifle of the Swiss military until the 90s. It used a modified version of the HK/CETME roller delayed action, and was equipped with some very uniquely Swiss features, most visibly the ‘beer-keg’ charging handle.