Zastava M70

The Zastava M70 () is a rifle developed and produced by Zastava Arms in Serbia (formerly Yugoslavia). The design of the M70 was based on the Soviet AKM rifle and it became the standard issue weapon in the Yugoslav People's Army in 1970. This weapon is also available as the ZPAPM70 (1.0 stamped receiver), ZPAPM70 Classic (1.5mm stamped receiver with bulged RPK style front trunnion, chrome lined bore), O-PAP (1.5mm stamped receiver with bulged RPK style front trunnion) or N-PAP (1.0mm stamped receiver, standard AKM style front trunnion) in the United States without select fire capabilities.
History.
Development of the domestic Kalashnikov variant began in 1959, and the first models submitted by Zastava for military field trials were with the early M64 (or M59) series of rifles with milled receivers, threaded barrels, familiar Zastava handguards, gas cutoffs for grenade launching, and several other diversities from the mainstay AK design, such as a bolt hold open device on the right side of the receiver, and a charging handle that appeared different from other AK models. Though performances were satisfactory, the Yugoslav military did not adopt the rifle as the standard infantry armament.
In 1970, the green light was given to begin with army-funded mass production of the AP M70 and M70 A series ("Automatska Puška Model 1970", "Automatic Rifle Model 1970") of which the M70 A was the folding stock version. It became the standard issue weapon in the Yugoslav People's Army in 1970.
Before the larger models of these rifles were made, cost-cutting measures in production resulted in the removal of the internal bolt hold open, and relocation to the magazine follower. This change eliminated any possible speed up in the reloading procedure (due to the bolt closing upon removal of the magazine) but allowed the operator to more easily identify if the current magazine is empty. Some rifles were also equipped with a notched selector control which allowed you to lock the bolt rearward by closing the dust cover on the charging handle. In addition, the usual placement of the barrel through threading into the receiver was replaced by the cheaper method of pressing and pinning the barrel into the receiver. Rifles produced with these new features were known as models AP M70 B (fixed stock version), and M70 AB (folding stock version). As with the M70 series of automatic rifles, these models failed to be produced in larger quantities before further cost-efficiency production measures gave way to yet another model.
This time the milled receiver was replaced by a receiver stamped from a smooth thick sheet of steel, a firing rate reducer was added to the trigger group, and the muzzle brake replaced the muzzle nut that originally came on the two prior models; the produced models were AP M70B1 (fixed stock) and M70 AB1 (folding stock).
These models eventually failed to mass-produce as well, before final alterations to the M70 rifle design resulted in the AP M70 B2 (fixed stock) and M70AB2 (folding stock) models. These last two models featured a thicker stamped receiver and bulged front trunnion, which was intended to strengthen the rifle in order to make it more suitable for frequent grenade launching. These two models would become the most widely produced of the M70 series, and in turn, the most widely used model used by the JNA, as well as the other militaries and various armed groups fighting in the Yugoslav wars of the 1990s. Parts kits imported into the U.S. however, show markings that appear to contradict the final fixed stock model name. On these kits, the bulged, thicker stamped receiver model is actually the M70B1 model.
All of the M70 models share the grenade launching ability with gas cutoff, the lengthened wooden handguard with 3 cooling slots, iron sights with flip-up illuminating elements, initially filled with phosphorus and later with tritium (Which is used on the current production M70's), to improve aiming at night; the plunger that keeps the receiver cover in place during grenade launching, and a non-chrome lined barrel. Fire selectors have R markings for automatic fire (R for "rafalna", "burst fire") and J for semi-automatic fire (J for "jedinačna", "single"). In the US market, the notched safety lever and bolt hold open magazines have been emulated by many companies as aftermarket accessories for other AKs. There also has been at least one attempt to recreate the original internal bolt stop.
The M70 and all of its variations were well accepted by the professional soldiers and conscripts of the Yugoslav People's Army. It was nicknamed "Ciganka" and "Srpkinja" meaning "Gypsy" and "Serbian Girl" respectively, due to dark finish on its metallic parts.
Design and features.
The M70 is designed on the basis of Kalashnikov principle; however, it can easily be told apart from other AK rifles by the three cooling slots on the foregrip, the light-coloured elm wood furniture and, both, the black rubber buttplate and lack of receiver tangs on fixed-stock M70s. The M70s also have a grenade-launching sight and gas cut-off on the gas block, and are capable of launching rifle-grenades. To launch them a 22 mm diameter grenade launching adapter is screwed on in place of the slant brake or other muzzle device.
The receiver of the M70 is 1.5 mm thick, compared to the 1 mm thick receiver of the AKM, making it more rigid. The receiver has a bulge at the front to accommodate an enlarged trunnion similar to a RPK receiver, with the front trunnion rivet configuration likewise resembling a RPK and not an AKM. Much like the other AKs, the M70 experienced changes to other parts between the milled and stamped variants, such as moving the gas relief ports from the tube to the gas block, adding lightening cuts on the bolt and bolt carrier, moving the rear sling swivel from the back of the receiver to the buttstock and omission of the metal ferrules from the lower handguards and pistol grips. It however, like the Type 56, retained many milled features, such as the thicker barrel, front sight shape, bolt and bolt carrier "in the white", smooth dust cover, lack of a pistol grip reinforcement plate on underfolders, forward sling loop on the gas block and blued finish. Intriguingly, the M70 always used the AKM style bayonets with lug under the gas block even on milled versions. Likewise, the barrel is hammer forged and was never chrome-lined, making it a little more accurate than a standard AKM, but at the cost of increased susceptibility to corrosion and shorter barrel life. The lack of chrome lining is unique for an AK and consistent with other Zastava built rifles of Soviet design (such as the Yugoslavian M59 or M59/66). The fixed stock versions have a unique rear trunnion and stock attachment method, with the two rivets in a vertical strait line and a large bolt passing through the majority of the stock and connecting it to the rear trunnion. Like the East German "MPi-KM", the fixed stocks also lacked a storage compartment for the cleaning kit. It also has flip up tritium night sights like the RK 62 and IMI Galil. Unlike other AK variants, a lock button must be depressed on the left side of the receiver as the first step for field stripping, to enable depressing the rear spring guide to remove the receiver dust cover. It is probable this feature is intended to prevent the loss of the top cover due to recoil when firing rifle grenades.