![]() ![]() The U-shaped receiver is from a smooth 1.5 mm (0.06 in) of compared to the 1.0 mm (0.04 in) sheet metal receiver used on the standard AKM rifles. This was done to decrease the slightly, but not significantly enough to lower it any less than 600 rounds per minute (RPM). The RPK also has a slightly longer receiver, by about 20 mm or less. Symmetrical bulges on both sides of the front trunnion ensures a proper fit inside the receiver. The barrel is pinned to the receiver in a modified, reinforced by ribbing, and is slightly wider than the trunnion used on the standard AKM type rifles. When a muzzle device is not being used, the threads on the muzzle can be covered by a. The barrel has a threaded muzzle, enabling the use of muzzle devices such as, and -firing adapters. The barrel also features a folding mounted near the, and a front sight base with a lug that limits the bipod's rotation around the axis of the barrel. It is fitted with a new front base, the block lacks a lug and an under-barrel guide. The -lined barrel is permanently fixed to the receiver and cannot be replaced in the field. Features The RPK features a heavier and longer than the AKM, this allows for the weapon to be fired for extended periods without major loss in accuracy due to the barrel heating up. ![]() It has a similar design layout to the, with to the RPK's effective range and accuracy, enhance its, and strengthen the. Design details Operating mechanism The RPK functions identically to the.You should be able to look at the side of the action and see what it says to determine if you have GP or a police gun. It refers to the checkered version as Model number 2. The text makes no mention of a MK designation in GP's. ![]() The book is a bit spendy but I have found it quite useful in my Martini hobby. The second model had a better finish, checkering and looked more like a sporting weapon, The Greener Story by Graham Greener has a lot more on this gun and other Greener arms. Standard model has no checkering and a barrel band. If your gun is a GP then it's not possible to determine the date made by serial number. If your gun is a Police gun then the serial number look up I did for you is correct. According to Greeners book the exact number of GP shotguns made is impossible to be determined as the serial numbers of these shotguns were not recorded until 1968. GP is is for Gaffer or General purpose shotgun. Might Help While researching this I came across this bit of info on the GP. Mag.HE told me he has to use1400+ fps for about 4/5 shells to get the mag to run 100%. That said, there is a R&R Saiga shooter at our match's, that thing runs like a top with the R&R 23 rd. ![]() For reliable performance with the 12 rd SGM Vepr mag your going to have to use 1300 fps x1 1/8 oz. ![]()
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January 2023
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