I recently purchased an G3 rifle (assembled by Ohio Rapid Fire) and it appears my rear sight drum wobbles a little bit horizontally, essentially making it impossible to sight in and hold zero. I wrote an email to the guy that handles their G3's with some basic questions about how to go about fixing it. I finally got a response and it was rather brief.
The response:Hello Sir,
I purchased a G3 rifle made by ORF. While familiarizing
myself with it, I noticed that the rear sight drum has some side-to-side wobble in it. I have been informed that the sight should not wobble and that it is likely missing one of the springs or balls that are installed in the sight. I do have an HK rear sight tool and the rear drum rotates properly.
Can you please advise me on how to go about correcting this issue? Should I remove the rear sight and check for any balls or springs which may be missing?
If so, this is something I could probably fix myself if you send me the parts. Would I remove the rear drum sight by completely unscrewing it counterclockwise with the adjustment tool? Please let me know.
Does this make sense? Do I access the spring and ball by rotating the drum all the way until it comes off? Is there 2 springs and 2 balls in there or is it just one of each?There should be a small spring then a detent ball. The ball may be stuck, use a small punch and push on it to engage, then reassemble.