The TRUGLO TFX Tritium Fiber Optic Sight Set for Glock 42/43 combines two proven illumination technologies to give you a sight picture that works equally well at the range, in low light, or in complete darkness. Designed specifically for the slim-profile Glock 42 and 43, these green rear sights with a white-outlined front dot prioritize what matters most: rapid target acquisition and shot accuracy, whether you're training, competing, or carrying for defense. The compact, snag-free profile fits standard holsters without modification, and the durable design handles the rigors of daily carry or high-round-count training sessions.

The TFX system pairs tritium—a self-illuminating element that requires zero batteries—with fiber optic technology, which gathers available light during the day and low-light conditions. This redundancy means your sight picture stays visible whether you're shooting under the midday sun or in near-total darkness. The white ring around the front fiber helps your eye snap to the front sight naturally, reinforcing proper sight alignment for faster, more accurate shots. The illuminating elements are housed in a shockproof, chemically resistant capsule designed to withstand cleaning solvents, oils, and even ultrasonic cleaning processes without degradation.

Construction is serious: CNC-machined steel protected by FORTRESS FINISH, a rust-proof coating that resists corrosion and wear. This is not a set you'll need to baby. The extended sight radius over factory Glock sights improves sight picture definition and precision potential, while the snag-resistant design won't catch on clothing or leather during the draw. If you carry a Glock 42 or 43 and want a sight set that performs in any light condition without batteries or maintenance, the TFX is a proven choice.