Mounting an Infiray Thermal Optic on Blaser-Sauer Rifles

By Precision Optique | Published: 2026-11-04

Category: Guias Práticos

A step-by-step process for fitting a quick-release Infiray mount to Blaser-Sauer rifles, including model-specific checks and zeroing steps that prevent common mounting errors.

Quick answer

Fit a quick-release Infiray mount to your Blaser-Sauer rifle by first confirming your Infiray model is covered, then seating the mount, torquing the rings, and zeroing at your intended distance. The INNOMOUNT QD for Blaser-Sauer-Infiray covers the Rico RH 35/50, RL 42 and RS 75, with a noted caveat for the RS 75.

Why the mount model matters more than the rifle

Blaser-Sauer rifles use a repeatable mounting interface, but the Infiray side is where most fit problems start. The same rifle can accept different thermal units, and each unit has its own body length, objective diameter and ring spacing. A mount that works for a Rico RH 35 may not clear the objective of an RS 75 without the correct plate or ring position.

The supplied catalog record for the INNOMOUNT QD lists the Rico RH 35/50, RL 42 and RS 75 as compatible, with a specific note that the RS 75 requires attention to the plate. That note is a decision point, not a footnote: check it before you tighten anything.

When a quick-release mount is the right choice

A quick-release Infiray mount lets you move the thermal between rifles or switch to a day optic without re-zeroing each time, provided the mount returns to the same position and the rifle interface is clean. If you only ever use one thermal on one rifle and never remove it, a fixed mount is simpler and removes one variable.

The trade-off is cost and height. Quick-release mechanisms add bulk and price, and they can sit higher than a fixed ring set. Check that the added height still gives you a comfortable cheek weld before you commit.

Step-by-step mounting and zeroing

Confirm your Infiray model against the mount list: Check the model name on your thermal, not just the brand. The INNOMOUNT QD covers the Rico RH 35/50, RL 42 and RS 75. If you use the RS 75, read the supplied plate note before fitting. If your model is not on the list, stop and ask before buying; do not assume the mount will fit.
Clean and inspect the rifle interface: Wipe the Blaser-Sauer mounting surface and the mount's mating face with a dry, lint-free cloth. Look for burrs, dried threadlocker or debris that would prevent the mount from seating fully. A mount that rocks or sits proud before clamping is not seated; find the obstruction rather than tightening harder.
Seat the mount without forcing it: Place the mount on the rifle interface and let it settle into position. It should sit flat with no gap at the front or rear. Do not draw it down with the locking screws if it stands off. If you need force to close the lever or tighten the screws, the mount is misaligned; remove and reseat.
Set ring position for your Infiray body: Position the rings so the thermal sits with the objective clear of the barrel and the eyepiece at a comfortable eye relief. For the RS 75, follow the plate guidance supplied with the mount rather than guessing. Check clearance with the lens cap fitted, not just the bare optic.
Torque the ring screws evenly: Tighten ring screws in a cross pattern in small increments until snug, using the torque figure supplied with the mount. Do not overtighten one screw fully before starting the others. If no torque figure is supplied with your mount, use a qualified gunsmith rather than guessing.
Bore-sight, then zero at your intended distance: Start with a bore-sight or a close-range target to get on paper, then move to your chosen zero distance. Make adjustments in small, recorded increments so you can return to a known setting. Record the final adjustment values; they are your baseline if you remove and refit the mount.
Remove and refit to confirm return to zero: Release the quick-release lever, lift the thermal off, then refit it and fire a confirmation group. The point of impact should stay consistent if the mount is seated correctly. If the group shifts on refit, inspect the interface and lever tension before trusting the setup in the field.

Product facts

Montage rapide Blaser - Sauer - Infiray: The INNOMOUNT QD is listed for Blaser-Sauer rifles and Infiray Rico RH 35/50, RL 42 and RS 75 models. Confirm your exact Infiray model against this list before ordering, because the mount is model-specific rather than universal.
Montage rapide Blaser - Sauer - Infiray