Bushnell 731303, AR731306C, 731309 owner manual

Installing the Sight on the Firearm with Hi-Rise Block (AR models only) The AR731306/AR731306C versions of the TRS-25 are supplied with a "Hi- Rise" mounting block that can be used to position the sight at the correct height for optimum performance on an AR-15 style rifle with a flat top receiver.

In order to use the riser block, first install the sight onto the block by following steps 1-4 in the previous section ("Installing the sight on a Picatinny/Weaver Rail"). Once the sight is installed on the Hi-Rise block, the entire assembly can be mounted on the weapon by following these steps:

1.Loosen the mounting screw so that the clamp will fit over the tapered side of the firearm’s Picatinny or Weaver rail.

2.Insure that the tapered clamp on the riser is oriented with the chamfered (beveled) end of the clamp at the top (Fig. 1).

3.Ensure that the riser’s cross screw with nut is tightened to clamp it firmly to the weapon’s rail (Fig. 2). Turn the large nut on the riser block ¼ to ½ turn with a coin, screwdriver or ½” wrench. WARNING! Do not over tighten.

4.Complete zeroing according to the "Zeroing" section on page 6.

Fig. 1

Fig. 2

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