Aim-O 551 Red/Green Dot Holo Sight - Image 2

Aim-O 551 Red/Green Dot Holo Sight - Image 3

Aim-O 551 Red/Green Dot Holo Sight - Image 4

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Aim-O 551 Red/Green Dot Holo Sight

£54.95

Compact holographic-style sight for rapid target acquisition
Switchable red and green illuminated circle-dot reticle
Multiple brightness levels to balance against any backdrop
Short body suits shorter rail systems and CQB builds
Ideal base optic to pair with a magnifier behind it
Coin-slot clamp fits 20mm Picatinny/RIS rails quickly
Aluminium construction in Black or Dark Earth

Guaranteed Safe Checkout

Why Buy From Platoon Stores

In-House Repair Workshop in Rochester Kent

Kent's Only Authorised 5.11 Tactical Retailer

UKARA Registered Retailer

Available in: Black, Dark Earth

Try it on our range. There is an indoor airsoft range at the Rochester shop, so you can chrono it, test an upgrade or get a feel for how it shoots. About the range

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Description
Specification

Fast aiming, compact footprint

The Aim-O 551 is a compact holographic-style sight built for speed. Its projected circle-dot reticle lets you get on target quickly with both eyes open, making it a strong choice for close and mid-range airsoft where reaction time counts. The short body suits carbines and shorter rail setups without hogging space.

Red or green, your call

Switch between a red or green illuminated reticle and dial in the brightness to balance against a bright sky or a dark treeline. That flexibility keeps the dot crisp and visible whatever the light on the day.

Magnifier-ready setup

Because the 551 has a short profile, it leaves room to mount a flip-to-side magnifier directly behind it. That gives you a rapid reflex optic up close and extra reach at distance, all on one rail. Explore more airsoft accessories to build out your rifle.

Quick, tool-free mounting

An aluminium body keeps things light and durable, and the coin-slot head clamp fixes the sight to any 20mm Picatinny or RIS rail in seconds without tools. Powered by four LR44 button cells, it is simple to run and available in Black or Dark Earth.

Product information reviewed by James Smith. Every gun is checked & serviced by our Rochester workshop before dispatch.

General
Brand	Aim-O
Colour	Black, Dark Earth
Dimensions
Length	Approx 120 mm
Weight	Approx 230 g
Other
Magnification	1x
Illumination	Red and green, adjustable brightness
Battery	4 x LR44 button cell (not included)
Colours	Black, Dark Earth
Optic type	Holographic-style reflex sight
Reticle	Circle-dot
Lens window	Approx 30 x 20 mm
Rail fit	20mm Picatinny/RIS (coin-slot clamp)
Body material	Aluminium alloy

Recommended upgrades & accessories

Frequently asked questions

What reticle does the 551 use?

It projects a holographic-style circle-dot reticle that you can switch between red and green, with several brightness levels to suit different light.

Will it fit my rifle?

It mounts to any 20mm Picatinny or RIS rail using a coin-slot head clamp, so no tools are needed to fit or remove it securely.

Can I add a magnifier?

Yes. The short 551 body leaves room to fit a flip-to-side magnifier behind it, giving you a fast optic with reach when you need it.

What batteries does it take?

It runs on 4 x LR44 button cell batteries (sold separately), a common and inexpensive cell to keep spare in your kit bag.

What colours are available?

The 551 comes in Black or Dark Earth, so you can match it to a range of airsoft rifle finishes and loadouts.

Aim-O 551 Red/Green Dot Holo Sight

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