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1/22/2020 12:12:56 PM
Posted: 9/14/2009 7:26:31 PM EST
[Last Edit: 9/14/2009 7:50:40 PM EST by amos1909]
I am mounting front flip sights on my M&P 15OR and am not cetain what color of Loctite I used in the past. I think I used the Blue but it has been a few years ago...

Thanks for the input,

Amos1909
Link Posted: 9/14/2009 7:49:50 PM EST
If LocTite brand, use the blue or green. DO NOT use red.
Link Posted: 9/14/2009 8:04:12 PM EST
[Last Edit: 9/14/2009 8:04:42 PM EST by 1GUNRUNNER]

Link Posted: 9/14/2009 11:28:53 PM EST
I usually go with the blue. Red works a little too good.
Link Posted: 9/15/2009 12:19:54 AM EST
Blue
Link Posted: 9/15/2009 2:38:28 AM EST
I use 271 red Loctite for screws and little stuff. It holds better than the blue 242 and I can still remove it if necessary. I use the 609 green stuff for scopes in scope rings to keep them from moving.

Consider avoiding the 638 Loctite. It may be too much of a good thing. Super strong and requires heat to remove.
Link Posted: 9/15/2009 5:03:30 AM EST
blue
Link Posted: 9/15/2009 11:37:27 AM EST
Originally Posted By ClemY:
I use 271 red Loctite for screws and little stuff. It holds better than the blue 242 and I can still remove it if necessary. I use the 609 green stuff for scopes in scope rings to keep them from moving.

Consider avoiding the 638 Loctite. It may be too much of a good thing. Super strong and requires heat to remove.


From the loctite website

Blue: Can be removed with hand tools
Red: Apply heat to remove
Green: Apply heat to remove


Red, IME, always requires heat to remove. Blue and green can normally be removed with just hand tools, but green is a little stronger.
Link Posted: 9/15/2009 12:00:41 PM EST
I recently used the Loc-Tite blue on scope ring screws before a class and I think I probably won't do that again.

1. You better be pretty sure about your eye-relief
2. See 1
3. If you ever do have to take it off, cleaning the threads is a bear.

I think keeping the appropriate tools in your kit to make sure everything is hand tight may be a better solution in the long run.

My $0.02, YMMV, Offer not valid in New Jersey.
Link Posted: 9/17/2009 2:34:39 AM EST
Blue for me.
Link Posted: 9/17/2009 6:36:51 AM EST
Whatever you do, use Loctite, otherwise the screws WILL shake loose. Blue works best on scope mount screws. Green only makes sense on iron sights that are loose in their dovetail (it's designed to migrate into place by capillary action). Never use red on scope mounts, as heat is required to remove, so removal in the field is no go, plus the heat could damage the optic.
Link Posted: 9/17/2009 11:25:06 AM EST
i use a little dab of mrs weavers fingernail polish on the threads of my mounts and scopes and have never had them come loose.
Link Posted: 9/19/2009 9:32:26 AM EST
Thanks for all the info!!!
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