The Rifle Basix RU-MKII Replacement Trigger is a mechanical drop-in upgrade designed for Ruger bolt-action centrefire rifles. Manufactured from wire-EDM cut A2 tool steel, this heat-treated trigger assembly replaces heavy 5.0 lb to 6.0 lb factory units to deliver an adjustable pull weight ranging from 14 oz to 2.5 lbs (approximately 397 g to 1.13 kg). It features radius-ground sear surfaces engineered to eliminate creep and overtravel while retaining the factory Ruger three-position safety mechanism via an eccentric-tip adjustment screw. The assembly weighs approximately 0.5 oz (14.2 g) and fits both right- and left-hand actions across compatible Ruger centrefire platforms.

Key Features

• Adjustable Pull Weight: User-adjustable from 14 oz to 2.5 lbs using the included hardware pack, spring, and adjustment screws.
• Precision Sear Geometry: Wire-EDM cut A2 tool steel construction with radius-ground sear surfaces to minimise trigger creep and overtravel.
• Factory Safety Retention: Integrates directly with the original Ruger three-position safety without requiring receiver modifications.
• Ambidextrous Fitment: Compatible with both right-hand and left-hand bolt-action receivers.
• Drop-in Hardware: Supplied with an installation hardware pack, replacement trigger spring, adjustment screws, and hex wrench.

Specifications

• Product Type: Bolt-action centrefire replacement trigger
• Material: Heat-treated A2 tool steel (wire-EDM cut)
• Finish: Black
• Pull Weight Range: 14 oz to 2.5 lbs (~397 g to 1.13 kg)
• Component Weight: Approximately 0.5 oz (~14.2 g)
• Action Compatibility: Right-hand and left-hand bolt actions
• Platform Compatibility: Ruger M77, M77 Mark II, Hawkeye (including LC6 trigger variants), and Gunsite Scout

Who is the Rifle Basix Black Replacement Trigger for Ruger Centrefire Rifles for?

• Precision hunters using Ruger M77 and Hawkeye rifles — reduces heavy factory trigger pulls down to a user-selected weight between 14 oz and 2.5 lbs, providing the clean break required for ethical field shot placement without altering the factory 3-position safety.
• Varmint shooters targeting small game at extended distances — replaces heavy factory LC6 triggers with an aftermarket rifle trigger weighing just 0.5 oz that eliminates pre-travel and adjusts down to a 14 oz threshold for steady field shooting.
• Field target shooters — provides an adjustable mechanical release ranging from 14 oz to 2.5 lbs featuring radius-ground sears to stop overtravel without adding bulk to the rifle.

Less suitable for: Target and benchrest shooters seeking an ultra-light pull below the 14 oz safe mechanical minimum threshold, who require a dedicated competition target trigger operating down to 8 oz; and owners of the Ruger M77 Hawkeye Alaskan, Ruger American Rifle, or Ruger rimfire and pistol-calibre rifles, who require dedicated platform-specific replacement trigger kits.