About Me The Editor View my complete profile. Popular Posts. The AK family of assault rifles are pretty widespread around the world, because of their lower cost of manufacturing, lower tooling costs, Revolvers: Pepper-Box Revolver.
The first repeating revolver type weapons and predecessors of modern revolvers are called pepper-box revolvers. The name has to do with the Hammer Fired vs. Striker Fired. In the world of modern firearms which use centerfire cartridges , there are two major types of mechanisms used to trigger the cartridge prim Pistols: Derringers.
The name "derringer" is often associated with a class of pistols that are small and designed to be carried in a coat pocket, woman Rifling: Manufacturing: Button Rifling. In our last post, we studied a method of rifling called Broach Rifling. Now we will study another method of rifling called Button Rifling Testing Firearms: Proof Test. Using a shortened AKS receiver as a starting point, it has almost no recoil. Firing from a closed-bolt and using many AK design features go figure , it has a nice, steady round per minute rate of fire.
Going one better than Calico, the gun uses a round helical tube mag that fits a hinge-like assembly under the barrel rather than above the action like on the American gun. In the early s, the Chinese were looking to replace up to a quarter million 7. One of the entries in this competition China is a capitalist communist country—what a tasty contradiction! Using a telescoping bolt like the Uzi, and a Calico-style helical magazine, it was chambered in 5.
The company lost the competition to the less complicated and still 7. The Chinese have been eager players in international military aid in the past decade including giveaways to lots of smaller, third world countries in exchange for favorable. With that being said, they are bound to make cameos in a warzone where US troops are any year now. Besides China, North Korea, and Russia, helical magazine weapons have appeared in some of the strangest places in the past couple decades.
In Hungary, there is the Danuvia VD, a stockless 9mm machine pistol that looks like a CZ frame has been married to a MAC slide with a round under barrel helical mixed into the batter. Kazakhstan, always a big name in the weapons game, is currently issuing the PPM1 subgun to its troops. Watch this space for updates. Looking for an essential camp and field knife that has proven itself in the field. We love the Kershaw Camp 10 after putting it to the test on hunts and more.
Browning has a long legacy of making legendary guns. The gas-driven BAR, bolt-action Safari, and lever-action Model 71 are three of our all-time favorites. Please enter a keyword to search. Sign In Login to Your Account. Forgot your password? Create an account? The Guns. Calico cutaway showing magazine basics. Calico magazine patent drawings. Bizon firing.
Chang feng with Hong Kong Swat. Chang Feng submachine gun featuring a helical magazine under the barrel. Chinese Chang Feng Subbie on loan in Uganda. The PPM1 no, that is not a papertowel tube under the barrel. Hungarian Danuvia VD Latest Headlines. Latest Reviews. The magazine capacity is unknown, but estimated to be around rounds.
Helical magazines all have different designs, but their principles are more or less the same, and they all have one thing in common: High capacity in a compact package. But how do they work? Lets have a look:. To illustrate the principle behind helical magazines, I'll use the next couple of pictures to transform an ordinary double-stack 40 round stick magazine into a helical magazine. This magazine is not an accurate representation of a particular magazine, but rather an illustration of the concept as a whole.
A normal magazines has a spring blue that pushes on a follower red , which pushes the cartridges toward the top of the magazine where they are fed into the chamber by the bolt. You will notice that the spring takes up quite a lot of space in the magazine. The first step toward turning this magazine into a helical magazine is to slant it forward. With the magazine slanted we can now twist and curl it up. We now have a 40 round magazine body that is a lot more compact than the stick magazine, but an ordinary coil spring would not be able to fit run inside of it.
The solution to this is both clever and elegant:. First we cut out the inner wall of the magazine red , remove it, and replace it with a slotted cylinder called a Separator green. The slots of the separator holds on to all the cartridges in the inner row, and as the separator rotates it pushes the cartridges along with it, as seen in this animation. We now need to add a follower red.
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