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One of my shooting buddies mounted a Holosun 507c mini red dot sight on his Glock 45. Over the course of a few months, I shot a couple of hundred rounds with it. My eye sight isn’t what it once was and I found I shot tighter groups with Glock 45 / Holosun combination. I wrestled with the idea of putting a Holosun on my Glock 17. Finally decided to give it a try.

Holosun released another version of the 507c with a green reticle 507c-GR and I bought one from Atkinson’s. I took the optic and my Glock 17 to gunsmith Allen Moore and had him mill my slide to fit. As expected, Allen did a wonderful job of milling and mounting.

The 507c models have three reticle modes, circle reticle, a dot reticle and a combination of the two. I found the circle looks round as it should even though I have an astigmatism in my dominate eye. The dot looks less than round. I like the green color reticle. I am a happy shooter.
 

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I have a red 507c on a G19. It's my favorite RDS. If I were buying one today, I would probably get the green one.
 

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I love green reticles and circle-dot reticles too. I wish the new Sig Romeo Zero was available in green.
 

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I ordered the green reticle version to put on a G45 MOS I picked up this past weekend. The C&H Precision adapter plate I ordered for it will be here tomorrow. Looking forward to trying it out. The green dot and circle are very sharp in appearance. Really glad I spent a little extra for the green.
 
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