leica|SKU:53-MCR-M43P

Rusan MCR-M43P Adapter — Bayonet Connector for Leica Calonox 2

Precision-Built Connection for Leica Calonox 2 Thermal

Anti-rotation lock system — Eliminates thermal shift under recoil
CNC-machined hardened steel — Built for season-after-season field use
Hard-anodized protective finish — Resists wear and corrosion in wet conditions
Modular MAR clamp pairing — Mount across multiple rifles with one thermal
  • Free shipping -- Fully insured — signature required on optics over $500
  • Free pre-purchase consult -- Technical optics support — mount pairing and compatibility
  • Authorized dealer warranty -- Full manufacturer warranty honored — no gray market

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  • Rusan MCR-M43P bayonet connector
Rusan MCR-M43P Adapter
Rusan MCR-M43P Adapter — Bayonet Connector for Leica Calonox 2
$0.00

Precision-Built Connection for Leica Calonox 2 Thermal

The Rusan MCR-M43P is the precision-built interface your Leica Calonox 2 or Calonox 2 LRF needs for a rock-solid thermal mount. CNC-machined from hardened steel with a hard-anodized finish, this rugged bayonet connector locks your optic in place and eliminates rotation when it matters most. It features an internal anti-rotation system with a "P" orientation for repeatable alignment. Note that this is the Calonox-side connector only—pair it with a separate Rusan MAR clamp to complete your mounting system.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
Fits Calonox 2 & 2 LRF
Anti-Rotation Lock
CNC-Machined Steel
Hard-Anodized Finish
30–80 mm
Compatible Rusan MAR Clamp Range
P
Anti-Rotation Orientation
CNC Steel
Construction Material
Thermal Zero That Holds After Every Shot

Thermal Zero That Holds After Every Shot

The enemy in thermal hunting isn't a bad optic — it's the adapter that lets your $3,500 thermal shift under recoil, turning a clean hog or predator shot into a miss you can't explain. The MCR-M43P's internal anti-rotation system eliminates that variable. CNC-machined from hardened steel with a hard-anodized finish, this connector locks your Leica Calonox 2 into a fixed, repeatable position every time you mount it. At Hunt Premium, we don't stock mounting hardware that would cost you a filled tag — every adapter we carry has been field-tested to hold zero through real recoil cycles, not just bench sessions.

One Thermal Unit, Multiple Rifles

One Thermal Unit, Multiple Rifles

The MCR-M43P is the Calonox-side half of Rusan's modular two-piece system. The other half is any Rusan MAR clamp sized for your daytime scope — 30mm through 80mm options cover most hunting setups. This means you buy the thermal connector once, then add MAR clamps as needed to run your Leica Calonox 2 on your predator rifle in September and your hog rifle in January without re-zeroing each time you swap. For hunters running one thermal across multiple platforms, this modular approach saves money and eliminates the risk of removing and reinstalling a fixed-mount thermal system on different rifles throughout the season.

Precision-Machined Fit for the Leica Calonox 2

Precision-Machined Fit for the Leica Calonox 2

The MCR-M43P isn't a generic adapter with sloppy tolerances. It's a bayonet interface custom-designed for the Leica Calonox 2 and Calonox 2 LRF, with a "P" orientation anti-rotation system machined into the connector body. CNC-machined from steel and finished with a hard-anodized coating, it tolerates the kind of wet, muddy, cold conditions that define predator and hog seasons in the South and Midwest. This isn't mounting hardware that works at the bench and fails in the field — it's precision-built to maintain its fit and function through repeated mountings, temperature swings, and hard recoil across season-after-season use.

Compatibility & Fitment

Ensure your thermal system is ready for the field with these exact compatibility requirements.

  • Designed exclusively for Leica Calonox 2 Sight and Calonox 2 Sight LRF
  • Requires a separately sold Rusan MAR clamp (30–80 mm range) to mount to a riflescope
  • Utilizes internal "P" orientation anti-rotation system for proper bayonet alignment

Built for the Field

A reliable adapter system for serious hunters running Leica thermal.

Thermal Night Hunting
Backcountry Predator Control
Quick Swap Between Rifles

Full specifications

At a glance

Dimensions
See product page
Surface
Hard-anodized finish
Warranty
See product page
Full specifications7 data points across 4 categories

Dimensions

WeightSee product page
DimensionsSee product page

Power & Performance

Anti-Rotation SystemInternal “P” orientation
Compatible Clamp RangePairs with any Rusan MAR clamp (30–80 mm)

Materials

ConstructionCNC-machined steel
FinishHard-anodized finish

Compliance & Warranty

WarrantySee product page

The Hunt Premium Promise

We stand behind every component we sell because gear failure isn't an option.

Authorized DealerFull manufacturer warranty honored on every product. No gray market risk.
Free ShippingShips free with fully insured delivery and signature confirmation.
30-Day ReturnsIf it doesn't fit your system, send it back unmounted in original packaging within 30 days.
★★★★★
“Swapped my Calonox 2 between my .308 predator rifle and my 6.5 CM hog gun all season using the MCR-M43P with two different MAR clamps. Zero held within half-MOA on both rifles every time I remounted. The bayonet lock is solid — no wiggle, no rotation. Way better than the fixed-mount system I ran before where I was terrified of stripping threads every time I switched rifles.”
F
First L.Lufkin, TX

Rusan MCR-M43P Adapter – Modular Bayonet Connector for Leica Calonox 2 / Calonox 2 LRF

This Rusan modular adapter connector is engineered specifically for seamless integration with the Leica Calonox 2 Sight and Leica Calonox 2 Sight LRF. It forms the critical interface between your Calonox 2 and a matching Rusan clamp adapter, delivering a rock-solid, repeatable connection system optimized for field use.

Note: The MCR-M43P is the Calonox-side connector only. A matching Rusan MAR clamp (sold separately) is required to complete the system and mount to your daytime riflescope.

FEATURES:

  • Bayonet interface custom-designed for Leica Calonox 2 and Calonox 2 LRF
  • Internal anti-rotation system (“P” orientation)
  • CNC-machined steel with hard-anodized finish
  • Pairs with any Rusan MAR clamp (30–80 mm) for multi-rifle flexibility

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Frequently Asked Questions

Yes. The MCR-M43P is the Calonox-side connector only. You need a matching Rusan MAR clamp sized to your daytime riflescope's objective bell — available in 30mm through 80mm options, sold separately. The MAR clamp attaches to your scope, and the MCR-M43P attaches to your Calonox 2. The two pieces connect via the bayonet interface. If you're unsure which MAR clamp size fits your scope, contact us for a free pre-purchase consult and we'll confirm the right configuration.
The MCR-M43P is engineered specifically for the Leica Calonox 2 Sight and Calonox 2 Sight LRF. It will not fit the original Calonox. The bayonet interface dimensions and the "P" orientation anti-rotation system are designed around the Calonox 2's specific housing geometry. If you have the original Calonox, contact us and we can point you to the correct Rusan adapter for that model.
The Rusan bayonet system is designed for repeatable mounting. The anti-rotation "P" orientation locks the connector into a consistent position each time it seats on the MAR clamp. In practice, most hunters report minimal zero shift when removing and remounting on the same rifle with the same MAR clamp. However, we always recommend confirming zero after any mount removal — that's responsible shooting practice regardless of mounting system quality.
We're an authorized dealer, and we actually use the thermal equipment we sell. Our team can walk you through the full Rusan system — which MAR clamp fits your specific scope, whether this adapter is right for your hunting application, and how to set it up for repeatable zero. You won't get that from a 10,000-SKU catalog that lists thermal adapters as an afterthought. Free shipping and a 30-day return policy on unmounted items are standard.
For thermal hunting on hard-recoiling calibers, steel matters. Aluminum adapters can deform over time under repeated recoil, introducing shift you can't diagnose in the field. The MCR-M43P's CNC-machined steel construction with hard-anodized finish maintains its geometry through thousands of recoil cycles. If you're running a thermal on a .308 or larger for predators and hogs, steel is the material that holds up across season-after-season use without developing play.
We offer a 30-day money-back return on unmounted items in original packaging. If you receive the MCR-M43P and it doesn't work with your Calonox 2 or your planned MAR clamp combination, send it back. That said, we'd rather get it right the first time — reach out before you order and our technical team will confirm compatibility with your specific thermal unit, riflescope, and intended MAR clamp size.
SKU: 53-MCR-M43P Categories: , Brand:

The Hunt Premium Promise

We stand behind every component we sell because gear failure isn't an option.

Authorized Dealer Full manufacturer warranty honored on every product. No gray market risk.
Free Shipping Ships free with fully insured delivery and signature confirmation.
30-Day Returns If it doesn't fit your system, send it back unmounted in original packaging within 30 days.

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About leica Hunting Gear

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