The good news is, the fight sight within the army’s M1 and M1A1 Thompson’s (as that gun’s bolt tackle is on the ideal aspect) is a lot better than the 1 found on this gun, with both of those a bigger notch and a small aperture for more exact hearth. https://b-t-industries-9mm-handgu42615.madmouseblog.com/13738172/the-ultimate-guide-to-daniel-defense-ddm4-v7