Strike Industries T1 Riser Mount Black - Lower 1/3 Co-Witness

The Strike Industries T1 Riser Mount is a lightweight optics mounting solution purpose-built for AR-platform rifles running T1-compatible red dots and reflex sights. This lower 1/3 co-witness riser gives you a sight picture that aligns with your rifle's iron sights while keeping your optic positioned for a more natural cheekweld and faster target acquisition. Whether you're running a carbine for duty, tactical training, or 3-gun competition, this mount bridges the gap between your upper receiver rail and your optic with precision and minimal bulk.

Strike Industries engineered this riser with modularity in mind. The included lower 1/3 spacer gets you to co-witness height right out of the box, but the design accepts an optional absolute-height spacer if you decide to change your sight picture later—no need to buy a different mount. That flexibility is rare at this price point and makes this riser a smart long-term investment for evolving gun builds.

Build quality is solid: the base and spacer are forged from 6061-T6 aluminum and finished in Type III hard anodize for durability in the field. The clamp and fasteners are steel, designed to hold zero through extended use. Everything you need comes in the box—mounting screws in two lengths, a hex key, a Torx wrench, and a small packet of threadlocker—so you can mount and shoot the same day.

Key Features

• Lower 1/3 co-witness height aligns with AR iron sights
• Modular design accepts optional absolute-height spacer for sight picture flexibility
• Lightweight aluminum construction with Type III hard anodize finish
• Requires 5 Picatinny rail sections for secure mounting
• All mounting hardware and tools included
• Compatible with all T1-pattern optics

Specifications

Frequently Asked Questions

Will this mount work with my T1-pattern red dot?

Yes—this mount is designed for any optic with a T1 footprint, which includes most compact reflex and red dot sights on the market.

What does lower 1/3 co-witness mean?

Lower 1/3 co-witness positions your optic so that when you look through it, your rifle's backup iron sights appear in the lower third of your sight picture. This lets you use irons as a backup without removing the red dot.

Can I change the height later if I want absolute co-witness instead?

The mount is designed to accept an optional absolute-height spacer, so yes—you can adjust your sight picture by swapping spacers without replacing the entire mount. The included lower 1/3 spacer comes ready to use.

What hardware comes with it?

The package includes a rail mount base, lower 1/3 spacer, mounting screws in two lengths (M3 × 24mm and M3 × 28mm), a single-use packet of threadlocker, a 4mm hex key, and a T10 Torx wrench.