- Alloy construction
- Integrated 20mm rail mount
- Red/green illumination - 4 reticle types
Those looking for an affordable reflex sight which combines the strength of military style designs with the functionality of the more common open reflex sight, check this out! The Theta Optics Open II is an upgraded version of existing open reflex sights with a redesigned alloy housing to provide greater protection in the even the sight is dropped or bumped during a skirmish.
The usual functions of the open reflex sight are still present, with red or green illumination and several brightness levels to choose from, and selectable reticles via the dial at the rear of the sight. This sight also comes with a 20mm Picatinny rail mount built in, meaning an easy and secure fit on any Airsoft gun with a 20mm Picatinny rail!
Fast Delivery
Delivery & Postage
Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.
For more information please check out our Delivery Information Page.
Estimates
Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.
UK Standard
£6.95
From
UK 24hr Dispatch
£8.95
From
Highlands / Islands
£24.99*
From
* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.
Returns
We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.
You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.
For more information on returning products, and how to do it please visit our Returns Policy Page.
Description
The Theta Optics Open II is an upgraded version of the common open reflex sight, offering a redesigned housing to protect the lens from the bumps and scrapes which often occur in energetic applications. The sight is easy to use and comes pre-installed on its' own 20mm RIS mount which will attach to any compatible 20mm Picatinny rail system.
The sight requires 3x LR44/AG13 button cells to power it, and 3 are included in the box to get you started. Like many popular ACM sights, you have a choice of four reticles suited different scenarios and ambient light conditions which can be selected by turning the dial at the rear of the sight. On either side of the sight body, you will find the activation switches, marked "ON GREEN" and "ON RED", and pressing either of these buttons will activate the sight in the chosen colour. Brightness adjustment is achieved by pressing the buttons repeatedly to scroll through the brightness settings, and holding both buttons simultaneously will turn the sight off.
If you have been considering an open reflex sight the Theta Optics Open II would make a fine choice for skirmishing with its more robust design and protective housing, preventing the sight from being shattered from a bump or scrape. Its multiple reticle types offer a wealth of functionality and its low price saves you some cash to invest in a lens protector!
Features
- Open reflex style
- Alloy construction
- Red/green reticle with brightness adjustment
- Windage and elevation adjustable - Allen key included
- Integral 20mm Picatinny rail mount
- Battery: 3x LR44 button cell (included)
- Backup rear ironsight built in
- Four reticle types - Dot, cross, ringed cross and ring
- Robust design - Housing protects the lens from drops/bumps
- Theta Optics branded
Package Includes
- Theta Optics Open II Red Dot Reflex Sight
- Allen Keys
- Cleaning Cloth
- Manual
- 3x LR44 Cells
Specification
General
|
Parts & Accessories Type
|
Sights and Scopes
|
|---|---|
 |
Red Dot Sight
|
 |
Instruction Manual, Battery, Cleaning Cloth,
|
Weight and Dimension
|
Product Height
|
Approx. 5.8cm
|
|---|---|
|
Product Length
|
Approx. 9.2cm
|
|
Product Width
|
Approx. 4.2cm
|
 |
Approx. 0.143kg
|
Construction
 |
Black
|
|---|---|
 |
Alloy shell and mount. Glass lens. Polymer rear housing. Steel mounting bolts and adjustment screws.
|
Sight Specific
 |
1x
|
|---|---|
 |
Windage, Elevation, Multiple Reticle Types,
|
 |
Adjustment Tool Required, Hex / Allen Key,
|
 |
Top, Left,
|
 |
Integrated Rail Mount
|
 |
40mm
|
 |
Multiple Reticle Types
|
Illuminated Sight Specific
 |
Yes
|
|---|---|
|
Illuminated Reticle Colours
|
Red,
Green,
|
 |
AG13 / SG13, LR44 / LR154,
|