G3 Windage Screw – 2-pack

Many understand the significance of certain specific firearm components. Without the trigger mechanism, the firing sequence could not take place. The bolt is necessary to cycle cartridges and casings in and out of the chamber. However, some often overlook the importance of the sighting system. Sure, the iron sights don’t assist in the functionality of a firearm; but try hitting your target without them. Better yet, try it without properly adjusted sights.

To aid you in your pursuit of precision shooting, Keepshooting.com now offers the G3 rear sight windage screw – another original Heckler & Koch part. Most people think of screws as a fastening device. Well, think again. The G3 rear sight windage screw isn’t responsible for fastening at all. Rather, it is used for adjusting the aim point to the left or right. Located at the rear of the receiver in the base of the rotary rear sight assembly, the windage screw – when turned – will move the entire rotary rear sight assembly left or right to compensate for windage. When looking at the underside of the rotary rear sight assembly, you will see a small slot intended to house the screw.

Never worry about unadjusted sights again with our 2-pack of G3 rear sight windage screws – available now for just $5.95.

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The G3 rear sight windage screw can be found in the base of the rotary rear sight assembly and is used to adjust the aim point of the rifle to the left or right. It is an original factory part made in Germany by HK.

Spare parts are an important consideration when it comes to firearms. Like any machine, firearms rely on a series of parts to function properly, including screws. If a part breaks or fails, a repair or replacement is necessary.

It is also important to consider availability. At this time, Keepshooting.com has a wealth of authentic, original factory parts from HK for the G3/HK91/PTR91. Not only are they readily available, but also they are cheap. Now is the time to take advantage.


All this talk about windage, but do we know what it actually is? Windage is the effect of wind on the course of a projectile – in this case a bullet. To adjust the sights, first loosen the rotary rear sight assembly mounting screw. Then, simply turn the windage screw in accordance with the required direction. If the point of impact is to the left of the target, move the sight to the right, and vice versa. Finally, retighten the mounting screw.

Additional Info
Additional Info
Manufacturer No
Brand H&K
Gun Model HK 91, HK G3, PTR91
Construction Steel
Condition Excellent
Manufacture Status Original Item
Returns Accepted Yes - Must Not Be Modified Or Visibly Used
Customer Reviews (4)
Tiny windage screw
Works exactly as it should. This is crucial to adjust the windage on the rear sight of a G3 and PTR91 Review by Erick (Posted on 9/21/2016)
Good spare part, Hard to find elsewhere
I picked up a package of these to replace the one in my G3 simply because the Century built G3 came with a stripped out head when I bough the gun.
I bough a pack of these and both looked brand new.
This is another part I picked up here because at this price I figured they were worth having for spares, may pick up another pack since I have 5 HK's total that use these.
Great price on a hard to find replacement part.
Review by RemMax (Posted on 5/2/2013)
The 2 I received look brand new. Perfect finish. Review by Jeff (Posted on 4/22/2013)
Excellent price
HK windage screws are a specialty item with left hand threads. Try finding one outside of and HK parts dealer, Excellent buy at this price. Review by Nato (Posted on 9/4/2012)
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