GTA Online · QUICK ANSWER
Improve weapon control and recoil
For Special Carbine Mk II or Combat MG Mk II, start with a grip and muzzle brake: neither requires research. Heavy barrels concern long-range damage; scopes change your view. Pistol Mk II’s Compensator is a research-gated exception.
Raise your Shooting stat and practise with one weapon. Our suggested drill is to hold range and target constant, change one setting at a time, and use controlled bursts when continuous fire pulls aim away. There is no universal best mouse or controller sensitivity.
Sources
- Special Carbine Mk II — components and access (opens in a new tab)Customization: 60-round regular clip versus 20-round special clips, grip, brakes, direct-purchase Heavy Barrel and conversion. Do not generalize the Heavy Barrel research requirement to this later weapon.
- Combat MG Mk II — components and access (opens in a new tab)Customization: 200-round regular extended clip versus 80-round special clips, grip, direct-purchase muzzle brakes, research Heavy Barrel and conversion.
- GTA Online Shooting skill (opens in a new tab)Shooting subsection: accuracy, recoil, reload, capacity and Shooting Range challenges. No measured percentage or skill-grinding exploit.
- Prototype93D: all 51 Bunker research items (opens in a new tab)Original recording, 17 May 2020. Creator chapter inventory 00:04–13:35; weapon examples at 08:28–11:53 and cosmetic sets at 11:59–13:35. Current catalogue cross-check; not a current damage test.
- GTAV Title Update 1.40 (opens in a new tab)13 June 2017: Mobile Operations Center workshop configurations and Mk II weapons