Iris Shutter

Iris Shutter

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The Knobloch Iris Shutter is ideal for pistol or rifle shooters, who shoot with open adjustment. This replaces the diopter and improves the focus (depth of field). It simply clips onto the lens holder from behind to avoid disturbing reflexes in the lens. It can be used for right or left aiming shooters. The iris shutter guarantees a brilliant, sharp aiming picture.

Iris shutters are available for large and small lens holders. The 37mm shutter suits K1 and K4 shooting glasses, while the 23mm version suits K2 shooting glasses.

Additional information

Dimensions (L/H/W)

23mm, 37mm



Item #

2062 (37mm), 2262 (23mm)


Australian Shooter review by Paul Miller – February 2013


The partnerships Frontier Arms have with our manufacturers have been forged over several decades. Much like the partnerships we have with our Authorised Dealer network.

Visit the Knobloch website for more information on this product.