The IRifle is essentially a multishot Flare Gun, with 5 rounds per magazine. If a flare hits a target, it will automatically be set on fire. However, the flare tends to quickly hit the ground soon after it is fired, making the weapon ineffective past short range.
The IRifle model was recycled for the AR2 Pulse Rifle, with slight changes. Its model still uses the name of that of the original model ("v_irifle").
- The IRifle is one of the few unreleased weapons shown in pre-release material, appearing in the E3 2003 video "Tunnels".
- In the Half-Life 2 files, several texture files for HUD weapon icons can be found, most of which still containing the icons for almost all of the cut weapons. The IRifle is among them.
- The flare box model can still be found in the Half-Life 2 files.