Automatic rifle from the 70
Not long after the introduction of the Model 58 Assault weapons CSLA our engineers redesigned the automatic rifle to a standard charge of NATO - 7,62 x51mm. This gun came from marking the 67th
At this time we got to the M16 rifles captured in a new caliber of the Vietnam War, along with the ammunition. It was an adjustment of the Model 58 Assault on the type of charge.
One of the problems in this development was the unavailability of drawings nábojových chambers and major holes in this caliber. Designers, therefore, the value obtained is the M16 rifles captured in Vietnam. Barrel length has been optimized for low dispersion. A similar situation was to charge 5.56 x45mm, Blanická strojirny also used to develop M193 ammunition captured.
Development of 70 rifles began in December 1970. You have chosen a basis in vz.58 Assault infantry models with fixed stock. Originated two versions of these weapons. One version was the muzzle attachment for firing rifle grenades and the second compensator (similar to that of AKM weapons), which could be to replace the cap for firing rifle grenades.
The differences between the AP 70 and a machine gun vz.58:
Actual case concludes with pažbením (stock, forearm and nadpažbí) and the trigger mechanism was preserved. Therefore, it can be deployed in case the original container.
Changes to touch either the piston and the expansion sleeve.
The actual double-column magazine with a capacity of 30 rounds segmental retaining shape but with a smaller curvature and its length was a little smaller.
As stated above, this one change has been mainly using ending with another mouth. The version with fixed nozzle for firing rifle grenades were equipped with folding bead sight for firing grenades. Version with a removable cap, these sights mounted directly on the attachment.
Curve visor had to be adjusted for different external balistku charge M193.
Carrier závorník remained almost unchanged up to the slot for inserting small strips of nábojových 5.56x45 ammunition. For závorníku was made the largest number of changes. In addition to changing the actual dimensions of the bed on the bottom of the new charges, pleaded change the extractor and pin. Pin was unlike Assault vz.58 secured transverse pin.
Tests of automatic rifles from the 70:
This weapon has undergone extensive comparison tests with a machine gun and automatic rifle vz.58 M16.
Tests showed better control weapons using ammunition 5.56x45mm. The difference was significant mainly in firing rate. Tests showed that vz.58 Assault is using the same ammunition equivalent M16 rifle.