DECUMANUS M4

Monoblock Scope Mount Cantilever

DECUMANUS M4 combines cantilever architecture and a multi-contact anti-torsion structure in a solution engineered to deliver advanced precision, optimized extension, and superior mechanical control. Ideal for professional configurations requiring operational flexibility and absolute structural performance, it provides an advanced optical mounting platform.

Available with either the Key or Quick mounting system, it ensures superior alignment, absolute stability, and advanced modularity.

Price range: 330,00€ through 380,00€ (IVA escl.)

TECHNICAL SPECIFICATIONS

DIMENSIONS AND WEIGHTS

See configuration table

Attachment

- Key
- Quick Mount
For Picatinny rail

MATERIALS AND FINISHES

Lightweight alloy 6082 and 7075, subjected to hard thick anodizing treatment
Matte black anti-wear and anti-reflection finish
Surface-treated stainless steel screws
Designed and manufactured in Italy.

CONFIGURATION

Multicontact anti-twist cantilever system
RAUC (ROME Alignment Ultimate Concept) multi-point interface for accessory attachment
Integrated anti-cant spirit level visible in shooting position
Stainless Steel Screws with Black Finish
Resistant to saline
Include scope level wedge to align the scope with its support
Unless otherwise stated in writing, only configuration and equipment listed specifically listed are included; any accessory not explicitly mentioned is excluded.

SET UP CONFIGURATION

Each monobloc scope mounting system is carefully certified by a 3D measuring system. The certificate is included within the kit and certifies its dimensional and geometrical features.

Diameter (D / Ø) 30 mm / 1.18" 30 mm / 1.18" 30 mm / 1.18" 34 mm / 1.34" 34 mm / 1.34" 36 mm / 1.42"
Height (H1) 32 mm / 1.26" 38 mm / 1.50" 48 mm / 1.89" 38 mm / 1.50" 48 mm / 1.89" 38 mm / 1.50"
Height (H2) 19,7 mm / 0.78" 25,7 mm / 1.01" 35,7 mm / 1.41" 25,7 mm / 1.01" 35,7 mm / 1.41" 25,7 mm / 1.01"
Width (W) 48 mm / 1.89” 48 mm / 1.89” 48 mm / 1.89” 52 mm / 2.05” 52 mm / 2.05” 54 mm / 2.13”
Weight (Key attachment) 290 g / 10.23 oz 310 g / 10.93 oz 330 g / 11.64 oz 310 g / 10.93 oz 320 g / 11.29 oz 300 g / 10.58 oz
Weight (Quick Mount attachment) \ 350 g / 12.35 oz 380 g / 13.40 oz 350 g / 12.35 oz 370 g / 13.05 oz 350 g / 12.35 oz
Exploded view
Technical SheetDownload
Instructions M4N00KDownload
Instructions M4N00QDownload

Customer Service

Contact our team if you need any assistance.

Fast Shipping

We ship all orders within 2 business days of purchase.

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FAQs

CUSTOMER SUPPORT & INQUIRIES

Our customer support team is available to answer any questions. Fill out the Contact Us form and we will get back to you as soon as possible.

Our return policy lasts 14 days, which means you have 14 days from receiving your item to request a return. To be eligible for a return, products must be returned new and unused, in perfect condition, with all protective materials intact and with tags and stickers still attached (where applicable), including all accessories and documentation. Shipping costs are non-refundable.

Please note that all sales are final. We do not offer refunds, exchanges, or returns for any products or services purchased.

By completing your purchase, you acknowledge that you have read and accepted this policy.

Exceptions are only granted in the following cases:

  • Items received damaged or defective (the issue must be reported within 48 hours of delivery)
  • Order fulfillment errors (e.g., incorrect item shipped)

We are committed to ship all orders within 2 business days. Estimated delivery times are indicative.

Once your order has been shipped, you will receive an email with a tracking link.

Alternatively, you can contact our customer service via the Contact Us form.

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