515 Series Red and Green Dot Sights 

The Holosun 515 series represents the brand's quality rifle optic line in a compact 20mm tube design. Available in both military-grade 7075 aluminum and grade 5 titanium (Ti-6Al-4V) housing options, these optics balance rugged durability with reduced weight. The IPX8 waterproof rating ensures these sights perform reliably in harsh weather conditions, including heavy rain and temporary water submersion. Every 515 series optic includes valuable accessories at no extra cost: anti-reflection kill flash, protective lens covers, and quality quick disconnect mounts that maintain zero through repeated installations. For additional protection during transport and storage, consider our dedicated red dot covers that offer complete coverage against harsh conditions.

Solar Panel Technology for Extended Battery Life

The CT models in the 515 series feature dual power sources for reliable performance. The integrated solar panel supplements battery power in daylight, extending the 50,000-hour battery life to ensure your optic remains powered when needed. This solar failsafe technology works well during extended field operations where battery replacement isn't practical. For an increased field of view and robust solar tech, explore the Holosun 530 series optics, which feature larger 30mm tubes for an expanded field of view while maintaining the same solar reliability.

Green Dot vs Red Dot Model Comparison

The 515 series offers both red dot and green dot reticle options to match different shooting environments:

• Green Dot Models (HE515GM-GR, HE515CT-GR, HE515CM-GR, HE515GT-GR): Provide good visibility in daylight conditions and appear brighter to the human eye at the same power setting. The green reticle offers contrast against most backgrounds and works well for daytime hunting and competitive shooting.
• Red Dot Models (HS515GM-RD, HE515CT-RD, HS515CM, HE515GT-RD): Offer lower power consumption and visibility in low-light conditions. The red reticle works well for dawn/dusk hunting and tactical applications.

Both color options feature the same housing options, kill flash devices, lens covers, and quick disconnect mount systems with the Multi-Reticle System for targeting flexibility.

Titanium vs Aluminum Housing Options

The 515 series offers two distinct housing material options:

• Titanium Housing (CT/GT Models): The HE515CT and HE515GT models feature grade 5 titanium construction that reduces weight compared to aluminum versions while maintaining durability. These models work well for weight-sensitive applications where every ounce matters.
• Aluminum Housing (CM/GM Models): The HE515CM and HS515GM models use 7075 aircraft-grade aluminum to provide durability at a more affordable price point. These models deliver the same optical performance and features as their titanium counterparts with minimal weight difference.

Both housing materials protect the internal components and maintain the same waterproof rating and operational reliability.

Quick Disconnect Mount System

Every Holosun 515 rifle optic includes a quick disconnect mount for rapid installation and removal without losing zero. This QD system allows for transitions between firearms or quick storage when transporting your rifle. The solid lockup prevents movement during use, maintaining zero through recoil and field use. The mount provides absolute co-witness height with standard AR-15 iron sights, creating a good transition between aiming systems should your electronic optic fail. This reliability makes the 515 series popular among users who want consistent performance under pressure.

To extend your range, pair your sight with one of our Holosun HM3XT Titanium for rapid transition between close- and mid-range targets.

Multi-Reticle System Technology

The key feature of Holosun's 515 series is the Multi-Reticle System (MRS) that offers three distinct aiming options in one optic:

   1. 2 MOA center dot for shot placement at a distance

   2. 65 MOA circle for close-quarter engagement

   3. Combined circle-dot configuration for targeting across distances

Switching between reticle patterns requires holding the minus button for three seconds, allowing adaptation to changing shooting scenarios without removing your hands from the firing position. This versatility reduces the need for multiple optics for different shooting applications.

Improved Targeting with Magnifiers

For shooters needing additional range capability, pair your 515 series optic with one of our Holosun magnifiers to extend your effective targeting distance. These flip-to-side magnifiers work perfectly with the 515 series, allowing you to instantly transition between 1x and 3x or 6x magnification without removing the optic.

Model Comparison and Pricing