Heckler&Koch MR762A1 - Manual (Page 9)

16 17
Fig. 12 – Folding (lowering) Fig. 13 – Lowered sight
TROY front sight TROY front sights
INSTALLING TROY REAR SIGHTS
1. The rear TROY sight installs similar to the front sights. Unscrew clamping assembly
and place the sights at the desired location on the Picatinny rail.
2. To raise the sight, grasp and pull up until the sights locks in the upright position. To
fold (lower) the sight, depress the button on the left side of the base and fold down.
(Fig. 14-16)
Fig. 14 – Rear Sight Fig. 15 – Lowering Fig. 16 – Rear sight
Rear Sight folded (lowered)
FRONT SIGHT ADjUSTMENT ZEROING
1. Fire a group of four (4) shots and measure the average distance for point-of -aim to
point-of-impact.
2. Adjust front sight for elevation only.
3.Windage adjustments are made with the rear sight.
4. Confirm zero with a group of four aimed shots and adjust as is necessary
Fig. 17 – Front sight adjustment Fig. 18 – Using a bullet tip
to adjust the front sight
FRONT SIGHT ADjUSTMENT
To move the bullet impact up, turn the adjustment wheel to the right/clockwise (Fig. 17
& 18). To move the bullet impact down, turn the adjustment wheel to the left/counter
clockwise (Fig. 17 & 18).
Fig. 19 – Rear Sight Fig. 20 – Windage adjustment
REAR SIGHT ADjUSTMENT
Windage adjustment can be made by inserting a pointed object (like a bullet tip) or a flat
object (like a screwdriver or coin) into the coin slot and turning the adjustment wheel. To
move the bullet impact right, turn the adjustment wheel to the right/clockwise. To move
the bullet impact left, turn the adjustment wheel to the left /counter clockwise (Fig. 19 &
20).
Fig. 21 – Rear Sight Fig. 22 – Changing aperture
The Troy rear sight also offers a choice of two flip-style apertures, both large and small
(Fig. 21 & 22). The large aperture is for close engagement and the small aperture is for
more distant shooting. Generally the large aperture works best for alignment with the
front sight and for short and medium ranges. Elevation does not change when switching
apertures. For long range shots, the small aperture can be flipped into position by finger
pressure on the top of the rear sight.
Sight radius can vary depending on the placement of the sights on the upper receiver
and handguard/rail system. Using a 15.5 inch sight radius on the MR762A1, the sight
angle per click is approximately .44 MOA
value for 1 click of adjustment 25 meter 100 meters 200 meters 300 meters
1/8” 1/2” 1” 1-1/2”
INSTALLING THE OPTIONAL FLIP-UP FRONT SIGHT
Press front sight onto front sight holder until the axes holes of front sight and front sight
holder are aligned. Push through front sight axles all the way, from the right to the left
and secure the front sight axles by snapping the retaining clip. Check function of foldable
front sight (Fig. 23 & 24).