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9/22/2017 12:11:25 AM
Posted: 8/8/2005 9:00:11 AM EDT
[Last Edit: 9/9/2005 12:14:05 PM EDT by ROUGH]
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Link Posted: 8/8/2005 9:09:57 AM EDT
I have one and it is great. Locks in place good and stays on during extended fire. The post is held in with a small pin, same as the A2
Link Posted: 8/8/2005 9:11:16 AM EDT
great thanks abunch
Link Posted: 8/8/2005 10:10:17 AM EDT

Originally Posted By cowboy7242001:
I have one and it is great. Locks in place good and stays on during extended fire. The post is held in with a small pin, same as the A2




+1
Link Posted: 8/8/2005 3:43:29 PM EDT
Rough,

I have the YHM rail mounted front on my "YHM" rifle. This rifle has the YHM front (quad rail mounted sight) and rear (A2 style) BUIS, YHM M/L quad rail and the YHM Harris Bi-Pod mount.

It is a RRA A4 upper and standard lower.

This one rifle gets a lot of looks and questions at the range. It has an EOTech on top. I could have sold it many times, one shooter had his check book out....

77Bronc
Link Posted: 8/8/2005 4:42:41 PM EDT
I don't recommend using a big ass screwdriver to tighten these sights onto the rail...I just found out the hard way that's NOT a good idea .

I snapped the end off, with about 1/4" of the end still screwed into the other side. I had one of those "oh shit, there's $70 down the drain" moments, but I took a little drill bit and backed it out. Time to order a new screw.

Guess this one really is "hand tighten only".
Link Posted: 8/9/2005 12:10:26 AM EDT
Fenian,

I forgot to mention, I have changed all of the big screws to smaller Allen socket head of the same pitch and diameter, I think they are 10-24's. Cut down to the right length and cold blued. Dab of service removable Loctite.

I do not like those big screws hanging out.

77Bronc
Link Posted: 8/9/2005 6:25:53 AM EDT
Great guys this sounds like a good way to go
the replacement screw idea is a great one I may have to try that.
Link Posted: 8/9/2005 8:11:48 AM EDT
Timely topic as I was planning on ordering one of these. Thanks for the info and the tips!
Link Posted: 8/9/2005 11:49:31 AM EDT

Originally Posted By 77Bronc:
Fenian,

I forgot to mention, I have changed all of the big screws to smaller Allen socket head of the same pitch and diameter, I think they are 10-24's. Cut down to the right length and cold blued. Dab of service removable Loctite.

I do not like those big screws hanging out.

77Bronc



apparently this has been a recurring problem, so much so that they went to a larger screw for this sight, about 4 months after it came out. I talked to YHM today...I had just ordered something last night, right before I broke this screw, so I called this am and they're hooking me up with a replacement allen screw that replaces the old thumb screw.

BTW, for anyone who's interested, they have the gas block/flip up sight towers back in stock...EVERYONE has been out of these for the last several weeks...so I picked up another one of those.
Link Posted: 8/10/2005 6:22:38 AM EDT
Great info thank you
Link Posted: 8/10/2005 7:43:00 PM EDT
does anyone sell those replacement allen head screws???? I would buy YHM sights if I could use an allen head....
Link Posted: 8/10/2005 9:09:07 PM EDT
YHM is QUALITY stuff a First Class Operation.
Link Posted: 8/12/2005 8:40:05 AM EDT

Originally Posted By ker2222:
does anyone sell those replacement allen head screws???? I would buy YHM sights if I could use an allen head....



For those interested in allen screws vs thumb screws. The correct screw for the YHM flip front and rear sights (YHM-9584, 9627, 9680,9680-A1)would be a 10-32 by 1 3/16" which is hard to find but a standard 10-32 by 1 1/4" is available in most hardware stores for about 10 cents.
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