Russia PSO-1 telescopic for AK SVD ASV VSS VSK SR3

Special thanks to @Nimuron for the sample photos, they are perfect.

The PSO-1 (Прицел снайперский оптический, Pritsel snaipersky optichesky, "Optical Sniper Scope") is a 4×24 telescopic scope manufactured by the Novosibirsk Instrument Manufacturing Plant (NPZ State Optical Plant) in Russia and issued with the Russian military's Dragunov sniper rifle. The PSO-1 is considered the high-end of Soviet military side-mounted telescopic scopes, exceeding the quality of most other PSO-style scopes. The side rail features a dedicated scope mount with adjustable tension.
This side rail is a dovetail rail, also known as the "Warsaw Pact" rail, with cutouts to reduce weight and simplify installation. The PSO-1 is compatible with all firearms equipped with this rail, meaning it can be used on nearly all former Soviet/Russian weapons, including:PP-19“Bizon”／PP-19-01“Vityaz”   Saiga／Saiga-12/Saiga-20/Saiga-410   AK-47／AKS-47／AKM／AKMS／AKMSU／RPK   AK-74／AKS-74／AKS-74U／AK-74M／RPK-74   AK-101／AK-102／AK-103／AK-104／AK-105／AK-9   AK-107/AK-108/AK-109   AN-94“Abakan”   AEK-971/AEK-972/AEK-973     AS“Val”／VSS“Vintorez”／SR-3/SR-3M/SR-3MP“Vikhr”   9A-91／VSK-94   OTs-12“Tiss”   OTs-14“Groza”   ASM-DT   SV/SVDS／SVDK／SVU/SVU-A/SVU-AS   V-94/OSV-96   SVN-98/KSVK   RPK-201／RPK-203   PK/PKM／Pecheneg／AEK-999“Barsuk”   Kord 12.7

You need an M5X0.8X25 and a st4.8X16 self-tapping screw to fix it firmly（The orange part in the picture above）,If you have the conditions, I recommend you use TPU to print eye masks.

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