| Manufacturer | Umarex |
| Type | Semi-Auto Pistol |
| Caliber | .50 cal |
| Power Source | CO₂ (12g) |
| Muzzle Velocity | ~300 fps |
| Effective Range | ~10 m |
| Projectiles | Rubber Ball (.50), Marking Ball (.50), Chalk Ball (.50), Polymer Ball (.50) |
| Price Range | $120–$140 |
Design & Build Quality
The T4E TPX 50 Gen2 is a compact, well-built .50 caliber CO₂ pistol from Umarex, designed with practical everyday use in mind. The Quick-Piercing System 2.0 (QPS 2.0) is a standout feature — its integrated pressure relief allows the 12g CO₂ capsule to be swapped out without tools and without losing gas pressure first, making reloads fast and frustration-free.
The slide features an optics-ready interface accepting any reflex sight with a C-More footprint, mountable directly without adapters. For iron sight users, fiber optic inserts in both the front and rear sights provide fast target acquisition in varied lighting. The stick magazine holds 8 rounds of .50 cal roundballs and can be reloaded regardless of the CO₂ fill level. The ambidextrous magazine release makes it equally accessible for left- and right-handed shooters.
Performance & Ballistics
The T4E TPX 50 Gen2 fires .50 caliber roundballs — rubber, paint, chalk, and polymer — at effective velocities for close-range force-on-force training and MagFed paintball play. Shot capacity is approximately 18 rounds per 12g CO₂ cartridge, which is modest but typical for compact CO₂ pistols in this class.
The Gen2’s QPS 2.0 system improves on the original by making mid-session CO₂ changes fast and tool-free, reducing downtime during training scenarios. While not a high-energy defensive launcher, the TPX 50 Gen2 performs reliably within its intended role as a training sidearm and MagFed paintball backup marker.
Handling, Controls & Ergonomics
The T4E TPX 50 Gen2 operates at under 7.5 joules of muzzle energy, putting it in the training and recreational tier. At 680 g and 205 mm long, it’s a handy, lightweight sidearm that handles easily.
Ammunition Compatibility
The Umarex T4E TPX 50 Gen2 is chambered in .50 cal caliber and is compatible with the following projectile types:
- Rubber Ball (.50) — Standard .50 cal rubber ball for kinetic impact; primary round for training and defense
- Marking Ball (.50) — .50 cal paint-filled marking ball for force-on-force training and scenario use
- Chalk Ball (.50) — .50 cal chalk ball for training and target marking scenarios
- Polymer Ball (.50) — .50 cal polymer ball for practice and low-impact training use
Known Issues & Limitations
- Shot capacity of ~18 rounds per CO₂ is lower than some competing platforms
- Sub-7.5J energy limits defensive application
- CO₂ performance decreases in cold weather
- C-More footprint optics only — other footprints require adapter plates
Accessories & Upgrade Ecosystem
- Reflex sights with C-More footprint (direct mount)
- Rubber balls, marking balls, chalk balls, polymer balls (.50 cal)
- Spare 12g CO₂ cartridges
- Umarex T4E compatible holsters
Platform Summary
The T4E TPX 50 Gen2 is Umarex’s refined take on their popular TPX platform — a compact, easy-handling .50 caliber training pistol that works equally well for force-on-force training, plinking, and as a MagFed paintball sidearm. The QPS 2.0 CO₂ system, optics-ready slide, fiber optic sights, and ambidextrous controls make it one of the most user-friendly launchers in its class.
At sub-7.5J, it’s a training tool rather than a primary defensive launcher, but for its intended purposes it delivers a well-rounded, polished experience. A solid choice for anyone building out a T4E training setup or looking for a reliable .50 cal sidearm.
Where to Buy
Official Manual
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