Hammy3DPrints Killflash Hex ARD for EOTech 512/552 – Black Open Center

Overview

The Hammy3DPrints Killflash Hex ARD is a friction‑fit end cap designed for the EOTech 512 and 552 optics. It installs with a deliberate press on the objective end, offering a compact, purpose‑built accessory that emphasizes control over reflections.

What it does for you

• Reduces glare and reflections from the glass, helping you see more clearly in bright light.
• The hex honeycomb pattern adds texture without overpowering the sight picture, especially at typical ranges.
• Constructed from carbon fiber reinforced PETG, providing improved thermal tolerance compared with common filaments.
• Original design heritage from Hammy3DPrints, proudly produced in St Louis, Missouri.

Design note: The hex honeycomb texture will be somewhat visible when magnified, but remains less noticeable at normal viewing angles. For best results, shoot with both eyes open and keep focus on the target, which is the recommended approach for red dot and holographic sights.

Usage and care

• To install, align and apply steady pressure until the end cap seats securely; some force may be required.
• If you notice shine from the printing bed, light sanding or a quick spray paint touch can reduce it.
• Keep the optic end clean before installation to ensure a smooth friction fit.
• Avoid exposing the part to harsh impacts that could affect fit or surface finish.

Material and origin

PETG-CF material offers resilience and a lightweight profile. This makes the ARD suitable for typical field conditions while staying compatible with standard optics used in practice settings.

Brand story

Original design and production are rooted in the United States, reflecting Hammy3DPrints commitment to American craftsmanship. The team has created thousands of 3D printed parts from their studio in St Louis, Missouri.