What color loctite for Glock front sight

General Firearms Handguns - Semi Auto
1

Today at the range I noticed my G19 front sight coming loose. It’s a Trijicon HD that I installed ~4.5 years ago. To be honest I can’t recall if I put Loctite on the threads, let alone what color Loctite. The pistol has been fired 6k-7k rounds since sight installation, including a 2 day 800 round class, so I’m a bit puzzled that they came loose 60 rounds into a range session.

I got the gun fairly warm today doing double & triple taps. Certainly not full mag dumps.

I’m going to clean the threads really well tonight and apply thread locker, but I’m not sure what color. I’m thinking red. Anyone have advice?

2

I put blue on mine 4 years ago, with no issues.

3

I have a similar issue with my own G19 and a Truglo TFO front sight. I used Vibratite VC-3 when I installed it 6.5 years ago and it just came loose. I guess I will try Loctite this time.

4

I use red. Hold a lighter on the screw for a few seconds if you want to remove sight

5

Blue. No issues on 3 glocks. Thousands of rounds.

Sent from my SM-G950U using Tapatalk

6

Red is what I use.

7

red is “permanent” meaning you will have to heat above 650 degrees to remove

use blue it is semi-permanent and doers not require heat to remove

8

I always use Red. I use a heat gun to remove.

9

Blue keeps it in but is no sweat to remove with the front sight tool.

10

I ended up using a big drop of blue, but I’ll keep an eye on it. If it somehow loosens again I’ll hit it with red

11

Blue 242.

12

Clean all surfaces well with alcohol.
Red loctite.
No problems.
I’ve removed them, too. Heat.

13

Switched to vibratite 111.Never had an issue. I use VC-3 on larger fasteners.

14

I use blue.

15

Blue. That’s also what Dawson ships along with his sights, IIRC.

16

I’ve used blue with no issue in a couple of years.

17

Tried blue - sight worked loose and switched to red ever since.

No problems since.

Also, removable with a lighter.

God Bless,

Brandon

18

I am kinda surprised the blue is not adequte. I have two different grades of blue; standard and a nuclear grade. I wonder if the nuclear grade bonds to the metal Glock uses better. Will try on my G34/5.

19

This…

20

We use red on plain black sights, and blue on tritium and fiber (in case you need to heat them up).