Air Rifle MP-512 Air Rifle production IMZ MP-512 (popularly referred to as Murka) is the most famou

Air Rifle MP-512 Air Rifle production IMZ MP-512 (popularly referred to as Murka) is the most famous and best selling air rifle. magpul By popularity it can be compared only air pistol Makarov. There are several reasons. At the end of the last century, there was simply no other choice. If in Moscow and St. Petersburg was at least some sort of choice, on the outskirts magpul of the country in the windows of gun shops lie only air rifle MR-512 Murka. Later, when the stores were Spanish air rifles, the deciding factor was the price. Air Rifle MP-512 was worth four times cheaper and install a powerful spring is not much inferior to the Spaniard. Very powerful and very high quality air rifles German company Diana cost so much that it seemed to come from another life.
On sale air rifle MR-512 magpul appeared in 1998. Available magpul in two versions, with wooden and plastic bed. Now caliber 4.5 mm produced three versions of the air rifle MP-512, which differ only in appearance. Iron have exactly the same and a little magpul more than in the previous samples. Therefore, a lot of advice and articles about the operation, methods for improving and strengthening can be forgotten. There is a stronger version of a capacity of twenty-five joules. It's called air rifle MR 512 MB and is available in calibers 4.5 and 5.5 millimeters. After much agonizing and curses from users, manufacturers finally settled on a plastic sleeve mounting stem. About the massive destruction of plastic sleeves lately heard, but users do not add optimism plastic.
The photograph shows the top down - the old steel sleeve, old plastic sleeve, magpul new plastic sleeve. Of the positive outcome of modernization can note pad trigger. The hole where the spring rests in the block machined to full depth, which makes it easy to change the native magpul spring to a more powerful Spanish. Previously, to install the Spanish spring had to find a turner or cut off a few turns of the spring. Trunks all options air rifle MR-512 four hundred and fifty millimeters in length. The total length of the rifle hundred and nine centimeters.
The device magpul is an air rifle MP-512 device is the usual classical scheme magpul breaketh the trunk. For loading rifle barrel needs to be reversed until it stops. When this barrel magpul through cocking lever pushes magpul back the piston, which in turn compresses the mainspring. In the rearmost position the piston, its projection, cocks the trigger and clings to sear. The scheme is cocked the trigger MP-512 is shown in the photo.
According to the scheme it is clear that the piston is held sear hook and sear itself is kept "stepping magpul stone" trigger. When you press the trigger, it releases the sear, by the spring of his right-hand side rises steeply, and the left goes down. Piston protrusion is disengaged, and the piston itself begins to move in before compressing the air and making a shot. The trigger mechanism is not adjustable. Therefore, all adjustments occur with a file.
Advantages and disadvantages of air rifle MR-512 Air Rifle MP-512 has only two advantages of this low price and very decent trunk. Of course with the barrel of his Walther does not compare, but we must remember that the entire rifle is worth almost twice less than the barrel of the Walther. Izhevsk magpul trunks can not be cleaned for years and a lot of practically spreading. Deficiencies much more. The main drawback is the terrible descent - long taut and not uniform (the force that increases then decreases). And the force on the trigger is directly dependent on the power of the spring - it is more powerful magpul than the descent more tight. To improve the descent must be cut in two step on the trigger and polish the friction surfaces.
In the photos shows a comparison of the original trigger air rifle MP-512 with upgraded - step halved and its area is polished. Descent became shorter, more uniform and predictable.
Some authors propose to round the corner magpul of the trigger to a radius of nineteen. I can not quite imagine how this is accomplished technically. And most importantly, I do not know whether in this case the descent predictable. Even in the twenty-first century designers Izhevsk plant were unable to equip its air rifle rubber insulating ring on the barrel. Breakthrough air removed piece of rubber tubing is inserted into the bypass hole. As a result, there is a huge bypass hole parasitic capacitance, which reduces the initial velocity of the bullet and the rifle power. Always had a weak spot iron rifle mount in the box. When the screw is loose iron loose, tighten the screws with a strong run into the piston magpul rod and the brake