The Gravity Gun (Physcannon), crowbar, SMG, AR2, and various explosives .

The Ultimate Guide to Half-Life 2 Content in Garry's Mod (2026 Edition) Garry's Mod (GMod) and Half-Life 2

: Basic textures and models are now included by default in GMod to prevent the infamous "giant red error" signs.

, or that come pre-packaged with HL2 or are added via the Steam Workshop. How to Access HL2 Pieces in Gmod