PK machine gun
Sights
### Sights

[thumb\|Rear iron sight element on a PKM receiver](/wiki/File:7%2C62_PKM_Lippujuhlan_p%C3%A4iv%C3%A4_2014_2.JPG "7,62 PKM Lippujuhlan päivä 2014 2.JPG")

#### Iron sights

The rear sight assembly is riveted onto the receiver cover and consist of a square notched rear tangent [iron sight](/wiki/Iron_sight "Iron sight") calibrated in  increments from  and includes a "[point\-blank range](/wiki/Point-blank_range "Point-blank range")" battle zero setting corresponding to a  zero. It is identical in design to the AKM and [Mosin–Nagant](/wiki/Mosin%E2%80%93Nagant "Mosin–Nagant"), except that it is oriented backwards with the notch forward and the hinge behind. The iron sight line has a  sight radius. Like the RPD rear sight, the PK rear sight also features full windage adjustment in the form of small dials on either side of the notch.

The front sight assembly is mounted near the end of the barrel and consists of a protected open post adjustable for elevation in the field.

#### Optical sights

PK machine guns that feature a Warsaw Pact side\-rail bracket on the left side of the receiver can mount various aiming optics. The standard Russian side rail mounted optical sight was the 4×26 1P29 Universal sight for small arms, an aiming optic similar to the British [SUIT](/wiki/L2A2_SUIT_Sight "L2A2 SUIT Sight") and [SUSAT](/wiki/SUSAT "SUSAT") and Canadian [C79 optical sights](/wiki/C79_optical_sight "C79 optical sight"). When mounted, the 1P29 sight is positioned centered above the receiver at a height that allows the use of the iron sights. It weighs 0\.8 kg, offers 4× magnification with a field of view of 8° and 35 mm eye relief. The 1P29 is issued with a canvas pouch, a lens cleaning cloth, combination tool, two rubber eyecups, two eyecup clamps and three different bullet drop compensation (BDC) cams for the [AK\-74](/wiki/AK-74 "AK-74"), [RPK\-74](/wiki/RPK-74 "RPK-74") and PK machine gun. The 1P29 is intended for quickly engaging point and area targets at various ranges. On the right side of the field of view a [stadiametric rangefinder](/wiki/Stadiametric_rangefinder "Stadiametric rangefinder") is incorporated that can be used to determine the distance from a  tall object from . The [reticle](/wiki/Reticle "Reticle") is an inverted aiming post in the top half of the field of view and is [tritium](/wiki/Tritium "Tritium")\-illuminated for low\-light condition aiming.[1P29 4\.0x Magnification](http://russianoptics.net/1p29.html) . Russianoptics.net A later designed similar optical sight suitable for the PK machine gun series is the 4×24 1Р77\.


Are there any differences in the way the front sight assembly is designed compared to other rifles?