Original U.S. WWII Era M4 Collimator Sight With Leather Carry Case - As Used on 60mm and 81mm Mortar Systems Disallow PayPal & Amazon Checkout That makes this a very

That makes this a very desirable "ALL MATCHING" example

Examination of the crown shows two linear cracks in the shell

It comes complete with officer gold hat cord with acorns

with re-graduated sight ramp attached on the outside of the original sight

Original U.S. WWII Era M4 Collimator Sight With Leather Carry Case - As Used on 60mm and 81mm Mortar Systems Disallow PayPal & Amazon Checkout That makes this a veryOriginal Item: Only One Available. This is a fantastic example of an M4 Collimator sight with an equally nice leather M14 carry case. This sight was used on both the US 60mm and 81mm mortar systems. By laying the sight on aiming stakes, the mortar squad could fire indirect missions. The open sight allowed the squad to fire direct lay missions. A collimator sight is a type of optical sight that allows the user looking into it to see an illuminated