The Trijicon ACOG 5.5x50 Rifle Scope Chevron .223 BAC Red Reticle (SKU TA55) is a fixed 5.5x magnification, 50 mm objective prism rifle scope with an etched red chevron bullet drop compensating reticle calibrated for .223/5.56, illuminated by fibre optics in daylight and by tritium after dark, with no battery of any kind.
How It Compares
The 5.5x50 is the long-range ACOG: more magnification and a larger objective than the 4x32 service models, on the same battery-free etched-reticle principle. The choice between this and the Trijicon ACOG 5.5x50 rifle scope Chevron .308 BAC red reticle is calibre — the bullet drop stadia below the chevron are cut for .223/5.56 here and for .308/7.62 there. Browse all rifle scopes, the Trijicon ACOG rifle scopes range or the full Trijicon optics range.
Ideal For
- Straight-pull and precision rifles in .223/5.56 where one fixed magnification covers the whole course
- Shooters who want a magnified optic with no battery to check, charge or replace before a shoot
- Silhouette and known-distance work, using the chevron base width to estimate range
Key Features
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Reticle: Red Chevron BDC; chevron tip zero at 100 m; chevron base width 5.53 MOA = 19 in (483 mm) at 300 m for silhouette range estimation
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Illumination: Dual illuminated: fibre optics (day) + tritium (night); battery-free
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Magnification / Objective: 5.5x fixed, 50 mm objective
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Mount: TA51 flattop thumbscrew adapter included
Technical Specifications
| Magnification / Objective |
5.5x fixed |
| Objective |
50 mm |
| Reticle |
Red Chevron BDC; chevron tip zero at 100 m; chevron base width 5.53 MOA = 19 in (483 mm) at 300 m for silhouette range estimation |
| Calibre Calibration |
.223 / 5.56 NATO BDC |
| Illumination |
Dual illuminated: fibre optics (day) + tritium (night); battery-free |
| Adjustment Range |
5 clicks per inch at 100 yards (approx. 0.2 MOA per click) |
| Eye Relief |
2.2 in (56 mm) |
| Exit Pupil |
0.35 in (8.9 mm) |
| Field of View |
18.4 ft at 100 yards (6.1 m at 100 m); 3.5° |
| Length |
12.0 in (305 mm); L×W×H 12 × 2.5 × 2.7 in (305 × 64 × 69 mm) |
| Weight |
25.6 oz (726 g) |
| Housing |
Forged aluminium, matte black |
| Mount |
TA51 flattop thumbscrew adapter (included) |
| Water Resistance |
Waterproof, dry-nitrogen filled; exceeds military standards |
| What's Included |
ACOG; thumbscrew flattop adapter (TA51); 5.5x50 Scopecoat (TA65); lenspen (TA56); lanyard assembly for adjuster caps (TA71E); logo sticker (PR15) |
| SKU / MPN / UPC |
TA55 / TA55 / 719307302020 |
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
Is the reticle illuminated?
Dual illuminated: fibre optics (day) + tritium (night); battery-free.
Which calibre is this ACOG calibrated for?
.223 / 5.56 — the bullet drop stadia below the chevron tip are cut for that cartridge. The .308/7.62 version is the ACOG 5.5x50 Chevron .308 BAC red reticle.
Is this a genuine Trijicon product?
Yes — factory-new, genuine Trijicon.
