Unity Tactical FAST Micro Prism Mount – 2.26" Mount for Primary Arms Micro Prism
You use a Primary Arms SLx or GLx Micro Prism optic and want to bring it to a modern FAST height.
The Unity Tactical FAST Micro Prism Mount raises your micro prism optic to an approximate 2.26" / 57.4 mm optical axis height, supporting a more upright head posture on AR and carbine platforms.
The difference from a standard red dot mount lies in the type of optic: Micro Prism optics have a fixed reticle and a different design than classic reflex sights. This mount is specifically designed for this Primary Arms interface.
Important note on compatibility:
This mount is designed for Primary Arms SLx and GLx Micro Prism optics.
It is not a universal red dot mount and is not intended for Aimpoint Micro, AEMS, ACRO, or RMR footprints.
Before purchasing, check: optic model, FAST height, eye relief, rail space, and planned magnifier setup.
What makes the FAST Micro Prism Mount practical:
✔ approx. 2.26" / 57.4 mm optical axis height
✔ for Primary Arms SLx / GLx Micro Prism
✔ supports upright head posture in AR/carbine setups
✔ 2-cross bolt clamp for M1913 / Picatinny
✔ compatible with optional FAST QD Lever
✔ prepared for suitable FAST FTC Magnifier Mounts
✔ 7075-T6 aluminum with Type III Hardcoat
✔ approx. 85 g weight according to product data
Why this product?
Micro prism optics are often chosen when a fixed reticle, clear target reference, or astigmatism-friendly use is more important than a classic red dot.
The FAST Micro Prism Mount brings these optics into the modern 2.26" height logic. This means you don't have to pull your head as far down behind the optic and can work more comfortably with headgear.
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2.26" height: facilitates a more upright head position
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Micro-prism specific: suitable for SLx / GLx Micro Prism
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FAST system: combinable with suitable magnifier logic
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stable clamping: 2 cross bolts for a secure fit on Picatinny
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QD option: optional FAST QD Lever possible
Instructor Tip: Properly Adjusting a Prism Optic for Eye Relief
A Micro Prism is less forgiving of incorrect head position than a classic red dot.
Adjust the optic so that you get a full, clear image immediately with a natural stance. Only then zero the rifle.
Our assessment
The Unity Tactical FAST Micro Prism Mount makes sense if you want to integrate Primary Arms Micro Prism optics into a modern FAST setup.
It is particularly strong if you want to take advantage of a prism reticle but still desire a more upright head posture, as with modern FAST red dot setups. For classic low-mount setups or hunting rifles with a low stock line, it is not automatically the better choice.
Suitable for:
- Primary Arms SLx / GLx Micro Prism users
- AR15 and AR10 platforms
- dynamic shooting and carbine training
- setups with helmet, hearing protection, or plate carrier
- users requiring fixed reticle logic
- FAST setups with appropriate magnifier integration
Less suitable for:
- classic red dot footprints like Aimpoint Micro, ACRO, or RMR
- low-mount setups with classic co-witness height
- hunting rifles with a low stock line
- users who do not want to properly adjust eye relief
- setups where minimal build height is more important than ergonomics
Micro Prism Mount or FAST Micro Mount?
✔ FAST Micro Prism: for Primary Arms SLx / GLx Micro Prism
✔ FAST Micro: for Aimpoint Micro footprint optics depending on the model
The optic decides. Prism Mount and Micro Mount are not interchangeable.
Application scenarios
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Carbine / AR: Use Micro Prism at 2.26" FAST height
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Dynamic Training: upright head posture with fixed reticle logic
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Gear Setup: better usability with helmet, hearing protection, or plate carrier
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Range: reproducible stance with clear prism view
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FAST System: precisely coordinate optic and magnifier height
Practical Tip: Do not treat like a Red Dot
A Micro Prism has a different visual behavior than a reflex sight.
Consciously check eye relief, diopter, head position, and field of view. Otherwise, you won't fully utilize the advantages of the prism optic.
Features & Construction Explained
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Micro Prism interface: specifically designed for Primary Arms SLx / GLx Micro Prism
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2.26" optical axis: modern FAST height for a more upright head posture
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M1913 / Picatinny: mounting base for compatible AR and carbine rails
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2-cross bolt clamp: distributes clamping force stably on the rail
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FAST QD Lever compatible: quick-release lever can be optionally retrofitted
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7075-T6 aluminum: stable material choice with low weight
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Type III Hardcoat: durable surface against abrasion and signs of use
Important note on mounting:
After mounting, always check for secure fit, screws, eye relief, diopter adjustment, and point of impact.
An elevated optical line changes the close-range offset. This must be trained at short distances.
Technical specifications
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Product: Unity Tactical FAST Micro Prism Mount
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Product type: elevated Micro Prism mount
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Compatibility: Primary Arms SLx / GLx Micro Prism
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Axis height: approx. 2.26" / 57.4 mm
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Mounting base: M1913 / Picatinny
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Clamping: 2 cross bolts
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QD option: compatible with optional FAST QD Lever
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Dimensions: approx. 5.3 × 3.3 × 3.8 cm
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Weight: approx. 85 g
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Material: 7075-T6 aluminum
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Surface: Type III Hardcoat
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Product number: NT002258
Variants & Selection
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Black: suitable for black AR and optic setups
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Tan / FDE: suitable for light or two-tone setups
The color is secondary. The confirmed compatibility with your Primary Arms Micro Prism optic is crucial.
Scope of delivery
- 1x Unity Tactical FAST Micro Prism Mount in selected version
Not included:
Primary Arms optic, FAST QD Lever, magnifier, tools, and other accessories are not included in the scope of delivery, unless explicitly stated.
FAQ
Which optics is the FAST Micro Prism Mount designed for?
For Primary Arms SLx and GLx Micro Prism optics.
Does the mount fit Aimpoint Micro or Holosun AEMS?
No. Other FAST mounts are required for these. This version is intended for Primary Arms micro prism optics.
What does the 2.26" height offer for a prism optic?
It allows for a more upright head posture and can facilitate use with a helmet, hearing protection, or plate carrier.
Can I use a QD lever?
Yes, the mount is compatible with the optional FAST QD Lever. This is sold separately.
Do I need to re-zero after mounting?
Yes. After any change to the optic or mount, the point of impact should be checked and re-zeroed if necessary.
Who is the mount not ideal for?
For users without a Primary Arms Micro Prism, classic low-mount setups, or applications where additional build height is disruptive.
Conclusion: The Unity Tactical FAST Micro Prism Mount is the suitable 2.26" mount for Primary Arms SLx / GLx Micro Prism optics. It is worthwhile if you want to neatly combine prism reticles and modern FAST ergonomics.
