M1 Carbine With Sight Mark Reflex Sight Test

NOTICE: The volume level is very low. You may need to use headphones and/or turn the volume up to 100. I couldn't get the video volume any louder, however, I did turn it down for the gunshots 😉.
I apologise for the inconvenience.

Finally got a chance to try out the reflex sight I put on my M1 Carbine. Looks like it isn't working too well.
The handguard, even though it feels sturdy and tight, moves just enough to knock the sight out of alignment. At least that's my best guess as to what's going on.
If you have any tips or ideas on how to keep the sight zeroed, leave them in the comments.

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