The Derya TM-22 has rapidly become one of Canada’s favorite .22 LR platforms due to its reliable aluminum construction and AR-style ergonomics. However, for shooters looking to transition from a “plinker” to a high-performance competition or precision rimfire rig, the factory configuration is only the starting point. At Rangeview Sports, we offer a suite of specialized upgrades and professional installation services designed to enhance the tactile feel, speed, and manual of arms of your TM-22.
1. Advanced Two-Stage Trigger Upgrade
The most significant limitation of the factory TM-22 is its heavy, single-stage military-style trigger. Our premium upgrade converts the trigger group into a refined two-stage system, offering a predictable “wall” and a crisp, match-grade break. To suit your specific shooting style, we offer four distinct trigger shoe profiles:
- Flat Blade (Straight): The choice for precision shooters, allowing for consistent finger placement and mechanical advantage regardless of where you pull.
- Curved Blade: The classic ergonomic feel, perfect for high-speed transition shooting and traditionalists.
- Short Flat Blade: Optimized for shooters with smaller hands or those who prefer a more compact reach within the trigger guard.
- Angled Blade: A specialized hybrid design that provides a unique tactile reference point for consistent finger indexing.
2. Manual Bolt Hold Open (BHO) Integration
Speed and safety are paramount in rimfire competitions like NRL22. The standard TM-22 lacks a dedicated manual bolt hold open. Our BHO upgrade allows the shooter to manually lock the bolt to the rear with ease. This is essential for:
- Showing a clear breech during range “cold” commands.
- Easier cleaning and maintenance without fighting recoil spring tension.
- Clearing malfunctions safely and efficiently.
3. Dedicated Charging Handle Bolt Cycle (Bolt Pull Only)
For shooters who want a streamlined operation or specific competitive advantages, we offer a “Bolt Pull Only” modification. This service optimizes the cycling mechanics of the charging handle, ensuring the smoothest possible rearward travel. By reducing friction and fine-tuning the bolt’s path, you gain faster follow-up shots and a more premium, “broken-in” feel to the action.
Professional Installation & Package Pricing
At Rangeview Sports, we don’t just sell the parts; our expert gunsmiths provide professional installation to ensure your upgrades are timed and tuned perfectly. Skip the headache of DIY and let our team handle the technical work.
| Service Item | Price (MSRP) |
| Two-Stage Trigger Upgrade (Any Shoe Style) | $140 + tax |
| Manual Bolt Hold Open Installation | $80 + tax |
| Charging Handle Installation Service | $110 + tax |
| Complete “Full House” Performance Package | $260 + tax |
The Full House Package ($260 + tax): This all-in-one “Turnkey” service includes all three upgrades—the Two-Stage Trigger, Bolt Hold Open, and Bolt Cycle optimization—saving you nearly $70 compared to individual installations.