The Trijicon ACOG 4x32 Rifle Scope Crosshair .223 Tritium Amber Reticle (SKU TA01NSN) is the tritium-only 4x32 ACOG: a fixed 4x prism rifle scope with an etched amber crosshair ballistic reticle calibrated for .223/5.56 out to 600 m, integrated backup iron sights and no battery of any kind.
How It Compares
This is the plainest ACOG Trijicon build, and the one detail that separates it from most of the range is the illumination: tritium only, with no fibre optic light pipe. The reticle appears black against a bright background in daylight and glows amber once the light drops, rather than tracking ambient brightness the way a dual-illuminated ACOG does. The .308/7.62 version, calibrated out to 800 m, is the Trijicon ACOG 4x32 rifle scope, .308 amber crosshair, and the Flat Dark Earth dual-illuminated model is the ACOG 4x32 in Flat Dark Earth. See the whole range in Trijicon ACOG rifle scopes, all rifle scopes or the full Trijicon optics range.
Ideal For
- Service rifle and practical shooting in .223/5.56 with a simple, unchanging sight picture
- Shooters who want backup iron sights built into the optic rather than added to the rail
- Rifles that must work with nothing to switch on and no battery to carry
Key Features
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Reticle: Amber Crosshair ballistic reticle, .223/5.56 BDC out to 600 m; appears black in daylight, glows amber in the dark
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Illumination: Tritium only — no fibre optics, battery-free
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Magnification / Objective: 4x fixed, 32 mm objective
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Mount: TA51 flattop thumbscrew mount, with integrated backup iron sights
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Warranty: Trijicon Limited Lifetime Warranty
Technical Specifications
| Magnification / Objective |
4x fixed |
| Objective |
32 mm |
| Reticle |
Amber Crosshair ballistic reticle, .223/5.56 BDC out to 600 m; appears black in daylight, glows amber in the dark |
| Calibre Calibration |
.223 / 5.56 NATO BDC (600 m) |
| Illumination |
Tritium only — no fibre optics, battery-free |
| Adjustment Range |
2 clicks per inch at 100 yards (0.5 in per click, approx. 1/2 MOA) |
| Eye Relief |
1.5 in (38 mm) - short |
| Exit Pupil |
0.32 in (8.1 mm) |
| Field of View |
36.8 ft at 100 yards (12.3 m at 100 m); 7° |
| Length |
5.98 in (152 mm); L×W×H 5.98 × 2 × 2.3 in (152 × 51 × 58 mm) |
| Weight |
15.6 oz (442 g) |
| Housing |
Forged aluminium, matte black |
| Mount |
Flattop thumbscrew mount (TA51) + integrated backup iron sights |
| Water Resistance |
Submersion depth 66 ft (20 m); dry-nitrogen filled |
| SKU / MPN / UPC |
TA01NSN / TA01NSN / 719307300538 |
Warranty
Trijicon back this with their Limited Lifetime Warranty: the optical system and metal structure are covered against defects in materials and workmanship for the lifetime of the original owner. The tritium lamp carries its own multi-year term from date of manufacture.
UK Delivery & Support
Delivery is a flat £5 by Royal Mail Tracked 24, UK addresses only, with no free-delivery threshold. Allow 7–10 business days from order to doorstep — most of that window is sourcing, and the Tracked 24 leg is the last day of it. Duties and import fees are prepaid, so there is nothing to pay on arrival. Questions about reticles, mounts or fit? Email info@xtremetactical.co.uk, or message us on WhatsApp or by text on +44 7940 435857 — messages only, we don't answer voice calls.
Frequently Asked Questions
Does it need batteries?
No — the reticle is lit by tritium alone, so there is nothing to switch on and nothing to run flat. This model has no fibre-optic light pipe: the reticle reads black against a bright background in daylight.
What calibre is the reticle calibrated for?
.223 / 5.56 NATO, with bullet drop compensating stadia out to 600 m.
Does it come with a mount?
Yes — the TA51 flattop thumbscrew mount, and the optic carries integrated backup iron sights.
Can I shoot with both eyes open?
Yes — the ACOG is designed around the Bindon Aiming Concept for both-eyes-open shooting at speed.
What warranty does it carry?
Trijicon's Limited Lifetime Warranty. The tritium lamp carries its own multi-year term from date of manufacture.
Is this a genuine Trijicon product?
Yes — factory-new, genuine Trijicon, covered by Trijicon's Limited Lifetime Warranty.
