Clamping Adapter KA-MC 54mm vs 57mm: Which Fits
By clast.com.au | Published: 2026-10-23
Category: Comparisons
Compare the LIEMKE KA-MC 54mm and 57mm clamping adapters for thermal imaging attachments. Learn which size fits your day optic and why the choice matters.
Quick answer
Choose the KA-MC 57mm if your day optic objective bell measures close to 57mm; pick the KA-MC 54mm for optics with a 54mm objective. The right size ensures a secure, scratch-free clamp for thermal imaging attachments.
Why size precision matters for clamping adapters
A clamping adapter that is too large won't grip your day optic firmly, risking movement or misalignment. One that is too small may not fit at all or could damage the lens housing. The LIEMKE KA-MC series solves this with dedicated 54mm and 57mm versions, each designed to match a specific objective diameter.
Both adapters share the same low-profile design and wide clamping surface for stable hold. The inner flange includes a rubber coating that protects the front of your optic from scratches. The only difference is the clamping diameter, which determines compatibility.
Trade-offs between the 54mm and 57mm adapters
- Objective diameter match: Measure your day optic's objective bell outer diameter. If it is 54mm, the KA-MC 54mm is the correct choice. If it is 57mm, go with the KA-MC 57mm. There is no universal size.
- Clamping stability: Both adapters provide a wide clamping surface and rubber coating for a stable, non-marring grip. The trade-off is that you must commit to one size; mixing diameters compromises hold. Measure twice, order once.
- Compatibility with thermal attachments: Both adapters are designed for thermal imaging attachments on day optics. The choice does not affect attachment compatibility—only the fit on the day optic side.
Product facts at a glance
- Clamp Adapter KA-MC 57mm: The LIEMKE KA-MC 57mm adapter has a low profile and wide clamping surface for stable attachment of thermal imaging devices. This size fits day optics with a 57mm objective bell, providing a secure hold without extra bulk.
Clamp Adapter KA-MC 57mm - Clamp Adapter KA-MC 54 mm Adapter: The LIEMKE KA-MC 54mm adapter shares the same low-profile design and rubber-coated inner flange for scratch protection. Choose this version if your day optic has a 54mm objective; the precise fit prevents wobble and protects the lens housing.
Clamp Adapter KA-MC 54 mm Adapter
Which adapter fits your setup?
Best for
- Day optics with a 57mm objective bell – choose the KA-MC 57mm
- Day optics with a 54mm objective bell – choose the KA-MC 54mm
Not for
- Optics with an objective diameter other than 54mm or 57mm – consider a different adapter size
