I do use Loctite when replacing front sights. My choice is 262 but 242 works well too as long as you clean/degrease the screw with alcohol. I’ve never had to use heat or more than finger force to remove 262 and have never had one come loose.

The very short description of sight radius (distance between sights). If you have an imperfect sight picture when the round is fired - that error is amplified the shorter the sight radius. The further away the target being shot at is, the greater the effect.

Here’s a chart I just found that shows with a 3” sight radius and a .5 mm error in sight picture the effect is 3 inches at 25yds. But with a 6” radius the effect is only 1.4 inches.



Don’t get too consumed with this for the type of shooting you want to do - almost all pistol self defense shots are at extremely close ranges. It’s just something I keep in the back of my mind and really just consider for competition shooting.

There is a reason Glock created the 17L for competition and not long after new rules about the pistol length were created, effectively banning the 17L from competition! They had to shorten it down to the model 34 to be more fair.


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One of the advantages of non captive recoil springs is that they are easy to change at the range... Take both springs to the range and try them... See which you like the best...

My own suggestion would be to stay with your original choice of TruGlo TFX Pro 'LOW LIGHT' sights. Don't try to put them on by yourself. Have someone who has done this before and has all of the right equipment do it for you. (It's worth the $25-30 bucks!)

With over 40 years of pistolsmithing experience to go by, I think that anyone who uses 'red' Loctite (#271) on gun sights is just plain nutz! Red Loctite is not now, or ever has been formulated to use on anybody's gun sights. (Remember: Someday those sights are going to have to come off the gun; and, if they were originally put on with red loctite then THAT ain't going to happen without a great deal of unnecessary effort and expense.)

I would also suggest you forget about the remark that a TruGlo front sight will shorten your available sight radius—THAT is just plain nonsense. Out in the real world something like that will never happen; and, for sure, neither you, nor anyone else will ever notice any such minuscule reduction. (This could only happen on an internet gun forum—OK!)

If you are wondering what type of Loctite formula I use to install my own front sight jobs? Well, I use 'purple' (#222) low strength Loctite; and, so far (about 12 years), I have never had a problem with a loose front sight; BUT I have had a problem with red Loctite that an idiot gun dealer used on one of my Glocks. (It cost me several lost days, and $100 + dollars in order to have a highly skilled machinist mill that damned set of sights off the gun without doing any damage to the slide!)

By the way, over the years I've seen dozens—if not hundreds—of G17's with TruGlo sights on them. Other than the standard TruGlo sights being somewhat fragile and susceptible to crazing and other damage from certain cleaning solutions, I have never heard any sort of complaint about them. TruGlo TFX Pro's are 'good to go'!