If you are looking at a "v0.5a" zip file, it generally contains:
: Ensure it comes from an official developer Discord or a trusted site like Google Play or Steam to avoid malware.
: Early builds are often unoptimized and may require specific DirectX versions or 64-bit Windows environments. Gunsmith Simulator M1911 CQB Gameplay & Analysis | Sim UK
: A list of fixes and new features added since v0.4, often including new attachments like scopes, silencers, or grips.