Community activity
Key specifications
- Brand
- SWAMPDEER
- SKU
- HD 511A
- Category
- Red Dot Sights
- Availability
- In stock
- Brand
- SWAMPDEER
- Size
- 83.8*44.1*42mm
- Weight
- 215g
- Windows
- 1*34
- Dot size
- 2 MOA
- Lap size
- 35 MOA
- Calibration
- 25 yards
- Parallax (20m)
- 0.5 MOA
- Parallax (15m and under)
- 0 MOA
- Click
- 1 click = 1MOA
Related community activity
Join the product community discussion
Open the dedicated Field Notes hub for this product to read buyer notes, setup questions, comments and likes from the OpticsWorld community.
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Product detail
SWAMPDEER HD 511A Red Dot Sight combines 2MOA reticle precision, IP78 waterproof rating, and 1200G recoil resistance for ultra-reliable target acquisition in extreme conditions.
With a compact 83.8×44.1×42mm design (215g), it ensures agility for tactical or hunting applications while maintaining durability against impacts and water immersion.
Optical Performance The 34mm window delivers a wide field of view, paired with a ±75MOA adjustment range (1MOA per click) for precise calibration at 25 yards.
Notably, parallax error is minimised to 0.5MOA at 20m and eliminated under 15m, ensuring accuracy during rapid engagements.
Buyer guidance
Choose it for the right job
Plain, practical checks for UK buyers comparing thermal, night vision and rifle optics before paying.
Target shooting setup
For daytime glass and club shooting, check reticle style, turret units, magnification range and whether the tube size matches your rings.
Fit and comfort
Eye relief, weight and mount height affect practical use. Confirm 30 mm / 34 mm tube size and rail type before ordering.
Support check
Send us the rifle platform, mount type and intended distance if you want compatibility checked before payment.
Compatibility checklist
Useful details to confirm before payment, especially for rifle-mounted optics and add-ons.
- Intended use: rats, rabbits, foxes, target shooting or observation
- Typical distance: under 50 m, 50-150 m, 150-300 m or longer fields
- Mounting: 30 mm / 34 mm tube, Picatinny, Weaver, dovetail, clip-on or handheld
- Accessories: IR illuminator, battery pack, charger, rail, case or tripod
Buying confidence
Practical questions a UK optics buyer is likely to check before ordering.
Is this suitable for low-light or night field use?
Check the category, sensor and illumination notes above. Thermal and night vision products are surfaced with specialist category context.
Can I confirm mounting or accessory compatibility?
Use the SKU, brand and specification table when contacting support so compatibility can be checked before purchase.
When do I see delivery and returns information?
Delivery, returns and checkout information is shown before payment so the buying path stays clear.
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