Home All Rifle Scopes & Optics DISCOVERYOPT Cantilever Scope Mounts | One-Piece 20 MOA 34mm or 30mm Tube for Picatinny Rail
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DISCOVERYOPT®

DISCOVERYOPT Cantilever Scope Mounts | One-Piece 20 MOA 34mm or 30mm Tube for Picatinny Rail

DISCOVERYOPT Cantilever Scope Mounts | One-Piece 20 MOA 34mm or 30mm Tube for Picatinny Rail

Regular price $29.99 USD
Regular price $0.00 USD Sale price $29.99 USD
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// POLICY
Product Guarantee & Shipping Policy

🚀 Time: 10-15 business days for global destinations.

We have facilities in the USA, UK, EU, and China. Your order is dispatched from the facility nearest to you.

Lifetime Warranty: ALL riflescopes,rings,mounts.

2-Year Warranty: Thermal devices.

Return or exchange within 30 days of delivery if it meets our return criteria.

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// TECHNICAL SPECIFICATIONS

PRODUCT SPECS

Scope Tube Diameter 30MM / 34MM (Select Variant)
Rail Type Picatinny Rail (MIL-STD-1913)
Mount Type One-piece construction
Return-to-Zero Accuracy 0.01
Concentricity ≤0.01MM/M
MOA Cant 20
Shock Resistance ≥1000G
Locking Method Two-screw locking
Main Material 6061-T6
Surface Finish Hard Anodized Finish
Manufacturing Process CNC One-piece Machined
Weight
// WHY DISCOVERYOPT

Engineered for Precision

Micron-Level Internal Lapping

Ordinary machining tolerances create stress points that can crush scope tubes or cause internal reticle shift under torque.

  • 100% surface contact, uniform pressure distribution.
  • Zero tube damage — no shims required.
// TECHNOLOGY

PRECISION ENGINEERED

Precision Torque Marking
Laser-etched torque specification (18 in/lbs) eliminates guesswork and ensures absolute consistency with every installation.

Precision Torque Marking

Mil-Spec Anodized Finish
Type III hard-anodized finish with an ultra-matte surface for superior scratch and corrosion resistance.

Mil-Spec Anodized Finish

Micron-level internal honing
100% surface contact for evenly distributed pressure.

Micron-level internal honing

Precision Guarantee
Ensure that the coaxiality error between the two internal axes is nearly zero.Ensure that there is no axial error when mounting the scope to achieve higher precision.

Precision Guarantee

📏 FITMENT GUIDE

Mount Fitment Assistant

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Recommended Center Height:
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Note: Data is for reference only. Actual clearance may vary based on specific rifle setup.
// COMMON QUESTIONS

Got Questions?

We've gathered the most common questions from our customers. If you need anything else, our support team is always here.

We provide a Lifetime Full Coverage Warranty for selected products. If your product breaks or malfunctions, we will repair or replace it free of charge.

No registration or receipt is required. Your Discoveryopt product is automatically covered.

XED,ED,HD, andLHDseries are covered for life.

LHT,HT,HS,WG,MSseries, and thermal imaging devices have a 3-year warranty.

No, accessories are excluded. However, you can return them within 30 days of purchase for free.

Loss, theft, intentional damage, and cosmetic damage that does not affect performance.

Free repair or replacement if the product breaks or malfunctions. If it cannot be repaired, we will replace it with a new product of equal or better performance.

Simply contact our support team by email. No receipt is required.

In most cases, customers pay for shipping to our service center, and Discoveryopt covers the cost of returning the repaired or replaced product.

Processing times may vary, but we aim to handle all warranty claims as quickly as possible.

You can either find "Chat" in the lower left corner of the website to communicate directly with us or email us at 📧support@discoveryopt.com.

Our goal is to ensure you have a product that meets your needs. If you’re not satisfied, we will work with you until the issue is resolved.


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Customers praised this cantilever scope mount for its "exceptional quality" and "excellent value for price." The one-piece design fits 30mm/34mm tubes with precise machining and "perfect fit." Reviewers noted it's "solid and reliable," easy to install, and holds zero well. The 20 MOA cant aids long-range shooting. Minor concerns: one unit lacked advertised MOA cant, another was too high, and one missing screws.

  • 5 stars: 53 (83%)
  • 4 stars: 10 (16%)
  • 3 stars: 1 (2%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous (Slovenia)
30MM-1.5IN
Bag for your buck!

For that amount of money it is excellent!

A
Anonymous (United States)
34MM-1.5IN
works great good

works great good quality

C
Centropomus R.
Better quality than I expected

For $50 I found this to be a well-made and higher-quality mount than I was expecting. I tested the concentricity with a mandrel and found it spot on. I tested the cantilever and could not visibly see deflection when I bear down on the front like I have seen in cheaper mounts. It is nicely finished and looks better in hand than the photos show. I'm definitely impressed at the bang-for-your-buck value and I'll update this review if it does not hold up to some good usage.

C
Captain R.
Very impressive machining & finish. A 1st-rate 34mm 20MOA mount for this price? Awesome. A+

This mount is specifically for a new high-end 34mm-tube LPVO I am waiting on. It is 1-8X28, so I can get use of the 20 MOA forward cant of the mount. The mount has three dedicated full recoil lugs, comes with two extra screw, and a hex-head wrench. It is robust where needed and relieved everywhere else. Which is why it is light.I am not new to DISCOVERYOPT. I have a set of their 30mm rings on a 6.5 Creedmoor and 1inch dovetail rings on something else. They have all been flawless and fully to the standard of the "name" stuff I used to buy. A+ all day.

I
I R.S.
Exceptional quality

This mount feels really well made, very smooth and well coated, sturdy and doesn’t feel like it would break. The screws are good quality and the packaging is good for storage.

V
Ville
30MM-1.5IN
Looks pretty well made

Looks pretty well made. Haven’t mounted it yet though .. ;-)

B
Bernhard F. (Germany)
30MM-1.5IN
Very Happy

Hello,
it is very solid and perfekt for my HD 2-12X24SFIR FFP.
I am very very happy with it.

R
REGIS M.
30MM-1.5IN
Great quality and easy to install

Great quality and easy to install. Exactly what I wanted. Thanks !

N
Nathan M. (United States)
30MM-1.5IN
Great mounts

Great mounts.

A
Anonymous (France)
30MM-1.5IN
Top qualité

Top qualité..délais de livraison assez long mais qualité au rdv

M
Michael K. (United States)
34MM-1.5IN
Didn't see an option for adding a diving board

Didn't see an option for adding a diving board.

D
Duane S. (United States)
30MM-1.5IN
good product

Mount looks great with scope haven't had a chance to shoot yet hopefully this weekend

R
Robert K. (The Netherlands)
30MM-1.5IN
The mount is milled very precise and fits the 30 mm tube perfectly

The mount is milled very precise and fits the 30 mm tube perfectly.
it also fits snug on the picatiny rail so its , with its 20MOA ideal for extended long range shooting because the elevation is upped by 20 moa. i"m loving it

R
Rene S. (Germany)
30MM-1.5IN
Sauber Verarbeitet

Sauber Verarbeitet,guter Preis.

I
Ian H. (United Kingdom)
30MM-1.5IN
Well made

Well made, wraps round my Pard DS35 firmly

Y
Y.A.R.

Great scope mount, especially for the price. I'm happy to install it.I the installation was a breeze.

H
Henrik S. (Denmark)
34MM-1.5IN
Fast delevery

Fast delevery, very nice, love it!

A
Anonymous (Belgium)
30MM-1.5IN
Héél stevige mount

Héél stevige mount. Excellente prijs-kwaliteit.

S
Stephan (Austria)
34MM-1.5IN
perfect fit

perfect fit for the scope. everything ok - i love it and it has a really great cool look

L
Luis C.F.T. (Spain)
34MM-1.5IN
Very good quality

In addition to the quality, the fit and installation of the headset are very easy. Very happy with the purchase.

M
MARCO M. (Italy)
30MM-1.5IN

Vero good item

w
william e.
The workman's ship

Very nice scope rings very well made.

S
Sgtmac
Has no 20 MOA cant...

It's labeled and marked as a 20 MOA cant but there isn't any and I need the cant for long range scope adjustment. The mount is very nice and I chose to just replace with another.

J
Julian S.
Solid and Reliable Scope Mount

I recently used the DISCOVERYOPT One-Piece 20 MOA Cantilever Scope Mount on my rifle, and it has exceeded my expectations. The mount was easy to install on my Picatinny rail, and the high precision design ensures my scope stays securely in place, even during heavy recoil. The shockproof feature is a huge plus, providing peace of mind while using it for long-range shooting.The 34mm tube fits my scope perfectly, and the 20 MOA cantilever provides the right amount of adjustment for my setup. Overall, this scope mount is durable, well-built, and performs exactly as expected. It’s a great choice for anyone looking for a reliable and sturdy mount for their rifle.

J
JB
So far so good

As advertised.