Are these sights made of steel?

does anyone know the "type of metal" used on meprolight sights

My instructions said to use Loctite 609 on the sights I used a medium blue Loctite,why 609?

609 is probably better suited for the rear sight. It's not as important to use the right kind of thread locking compound as it is to use it correctly. Blue loctite 242 is one of the easiest to disassemble, the green, red, then the green press fit bearing loctite, then gray. If all I have is blue loctite, the application dictates how I will apply it. When the trigger pin started walking out of the frame on my CZ75 I applied some very basic Japanese threadlocker, equal to the blue loctite, heated it with a soldering hot air rework gun until it dried, drove the pin back in, and the problem NEVER manifested itself again. The screw is so small on the Glock front sight I'd just stick with the blue loctite 242. If the red or green stuff decides to really stick, that tiny bolt could very easily break off, when you go to replace your sights in 10 or 12 years. GREEN 609 loctite would be better suited for a METAL rear dovetail sight that is too loose to stay in place, but not on that little screw. The red stuff, also okay for dovetail sights, but not good for small screws. Loctite 620 is the meaner green loctite for retaining pressfit bearings. I have used that one stripped hydraulic hose fittings in castings like steering boxes, drives, rams, etc. 660 gray is even tougher yet. They can all be broken free, most of the time. Roll pins that are a bit loose benefit from a drop of blue loctite, but let it dry before you drive the pin back in. Tiny screws, work exceptionally well with the blue stuff. Large left handed screws like a fan clutch, and loctite don't mix. You will be hating life if someone installs a self tightening bolt onto anything with any threadlock compound. Keep the 620 and 660 away from guns. Maybe 620 is okay on a machine gun.

What color is the Front sight? I'm looking for green front and rear.

see the *Excellent response on these sights from Seth Burgin posted on November 30, 2017... Amazon: 2-B Determined

Would it fit a glock 17 gen 3?

Yes, and no. From what I understand, these will physically fit on a G17, BUT the sight height in these are optimized for the ballistics of Glock subcompacts with 3.5" barrels rather than those of the G17 with its 4.5" barrel which produce higher velocities and flatter trajectories.

Brand	Meprolight
Color	Green/Green
Style	SLIMLINE 42,43,48
Sport	Hunting
Item Weight	0.9 Ounces
Material	Metal
Magnification Minimum	1 x
Compatible Devices	Handgun
Mounting Type	Integral Mount
Night vision	Yes
Model Name	MEPRO TRU-DOT FIXED
Manufacturer	Meprolight
Reticle Type	Dot
UPC	840103151199
Global Trade Identification Number	00840103151199
Item Package Dimensions L x W x H	7.05 x 5.55 x 1.06 inches
Package Weight	0.03 Kilograms
Item Dimensions LxWxH	8.75 x 4.5 x 1 inches
Brand Name	Meprolight
Warranty Description	2 Year Manufacturer
Suggested Users	unisex-adult
Number of Items	1
Part Number	MAKML10220
Model Year	2015
Included Components	Product

Meprolight ML10220G Gun Sight - Black, M

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