The Rifle Basix Black Replacement Trigger for Marlin Rimfires with T-900 System (1–2.5 lbs) is an aftermarket drop-in trigger assembly engineered specifically for Marlin 900-series bolt-action rimfire rifles. Designed to replace the heavy factory 4 to 7 lb trigger mechanism, it provides an adjustable, creep-free break between 1.0 lb and 2.5 lbs (approximately 450 g to 1,130 g). The unit integrates directly into factory actions while retaining the original Marlin mechanical safety lever, improving shot placement and trigger predictability across .22 LR, .22 WMR, and .17 HMR platforms.

Key Features:

• Adjustable Pull Weight: Features user-adjustable weight of pull from 1.0 lb to 2.5 lbs via integrated set screws, with included hardware and adjustment wrench.
• Durable Construction: Built with CNC-machined T6 6061 billet aluminium and EDM-cut A2 tool steel components treated to Rc 50–55 hardness for long-term wear resistance.
• Factory Safety Retention: Direct drop-in design that works seamlessly with the factory Marlin mechanical safety lever.
• Creep Elimination: Allows precise sear engagement tuning to eliminate pre-travel and factory trigger creep.
• Lightweight Footprint: Installs at an overall unit weight under 0.5 oz (approximately 14 g).

Specifications:

• Pull Weight Range: 1.0 lb to 2.5 lbs (operational range preserves bolt removal up to 2.0 lbs)
• Component Hardness: Rc 50–55 heat-treated A2 tool steel
• Body Material: T6 6061 billet aluminium with black finish
• Firearm Compatibility: Marlin 900-series bolt-action rimfires with factory T-900 fire control systems (models 915, 917, 925, 980, 981, 982, and 983)
• Calibre Compatibility: .22 LR, .22 WMR, and .17 HMR
• Installed Weight: Under 0.5 oz (~14 g)
• Packaged Weight: 0.125 lbs (~57 g)
• Package Dimensions: 10.16 × 10.16 × 1.27 cm
• Operation: Mechanical (no batteries or electrical power required)

Who is the Rifle Basix Black Replacement Trigger For Marlin Rimfires With T-900 System 1-2.5lbs for?

• Small-game and varmint hunters — Requires a consistent, light release in the field, utilizing an adjustable pull weight of 1.0 lb to 2.5 lbs to significantly reduce shot disturbance compared to standard 4 to 7 lb factory pulls when targeting rabbits, hares, or foxes at 50 m to 150 m.
• Target shooters and benchrest plinkers — Benefits from internal sear surfaces hardened to Rc 50–55 tool steel standards that eliminate gritty creep and provide a crisp, predictable break across high-volume rimfire range sessions.

Less suitable for: Owners of post-2011 Marlin rifles with factory XT Pro-Fire triggers, pre-T-900 actions, centre-fire actions, or semi-automatic rimfires; these setups require an XT-compatible trigger unit, an early-pattern MAR-1 trigger assembly, or an action-specific centre-fire replacement mechanism.