The Trijicon Compact ACOG 2x20 TA47 is an ultra-rugged, low-profile tactical prism sight forged from 7075-T6 aircraft-grade aluminum to provide maximum structural durability on lightweight firearm platforms. Functioning entirely without electronics or batteries, this specialized optic incorporates dual-exposure fiber optics for a daylight-bright reticle and a tritium-phosphor core that ensures visibility in total darkness. This specific configuration features a green RTR™ (Rapid Target Reticle) Horseshoe Dot pattern, which provides clear bullet drop compensation specifically calibrated for standard .223 Remington / 5.56x45mm NATO (55 grain) cartridges out to mid-range distances. Factory-equipped with a Trijicon Q-LOC Mount, it provides simple, toolless rail integration alongside exceptional return-to-zero assurance. Utilizing the Bindon Aiming Concept™ (BAC), shooters can quickly transition between targets with both eyes open, giving users with astigmatism a perfectly crisp, flare-free sight picture.