Physics:USP-1

The USP-1 "Tyul'pan" (From Russian: Унифицированный Стрелковый Прицел, первый образец, Unifitsirovannyj Strelkovyj Pritsel, pervyj obrazets, "Unified Firearm Sight, first model, GRAU index 1P29) is a Soviet/Russian universal optic sight, designed for use on the AK rifle family (AKMN, AK-74N, AK-74M, AK-101, AK-102, AK-105), the RPK-74N, the PKMN and the PKP "Pecheneg" and is designed for quick-mounting and quick-detaching. Compared with an open mechanical sight, the effectiveness of firing at targets is increased 1.2 to 2 times, and the time taken to conduct a firing session is reduced by 60%. It is designed by TsKB "Tochpribor" in Novosibirsk. Production is conducted in Novosibirsk instrument manufacturing factory (NPZ).

USP-1 (1P29)
A USP-1 mounted on an AN-94.
Place of origin	Soviet Union Russia
Service history
In service	1988–present
Wars	Crimean crisis
Production history
Designer	L. A. Glyzov, TsKB "Tochpribor"
Manufacturer	Novosibirsk instrument manufacturing factory
Specifications
Length	203 mm
Width	178 mm

Design

The sight possesses a mechanism for adjustments and a stadiametric rangefinder. No batteries are required in the sight. The optic scheme of the sight is a prismatic wrapping. It is easily mounted on the weapon using the standard Warsaw Pact rail.

Specifications

• Sight weight: 0.8 kg
• Weight of a complete sight system: 1.25 kg
• Magnification: 4x
• Field of view: 8 (14) degrees
• Exit pupil diameter: 6.5 mm
• Exit pupil length: 35 mm
• Resolution limit: 13 sec
• Amount of light retained: >70 %
• Adjustment range for zeroing: 0 – 400 m for vertical and horizontal adjustments
• Dimensions (L x H x W): 203 mm x 80 mm x 178 mm

Literature (in Russian)

• Изделие 1П29. Техническое описание и инструкция по эксплуатации, АЛ3.812.129 ТО. — 1994 г.
• Оружие ближнего боя России / Альманах. — М.: НО «Лига содействия оборонным предприятиям», 2010. — 660 с. — ISBN:978-5-904540-04-3