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Found 2 results

  1. Common Russian Muzzle Attachments for Saiga-12/Vepr-12 Review Short review of different muzzle attachments, that are used with Vepr-12/Saiga-12 and some other shotguns by Russian shooters. The muzzle attachments in the review: Flash hiders (FH), Muzzle Brakes (MB), Compensators (C), Muzzle Brake-compensators (MBC), chokes & paradox (Chokes). Efimov design MBC The most common MBC in Russia are models based on the same idea, now well known as "Polygon Muzzle Brake-compensator", that was suggested by Russian IPSC shooter Efimov Eugeny. His device has two cambers: first one works as Muzzle Brake, second one as Compensator. Molot Chief Constructor Mr. Sergey Urzhumtsev told me that first dosen of them was made by Molot and one still used during test-shootings. Then production of Efimov design Muzzle brake-compensator was moved to "Polygon" LLC in Chelyabinsk, and became known as "Polygon MBC". Pics of Original Efimov MBC for Saiga-12/Saga-20 made by Polygon The pics of Original Efimov MBC, that was modified by Vsevolod Ilyn. He added the additional holes for Up and Right compensation + increased the window in the second chamber for more Up compensation. Later "Guns Tuning Laboratories" started to make their own version of MBC based Original Efimov MBC (Polygon). I talked to the owner & Technical Director of "Guns Tuning Laboratories" about their PSH-2 several years ago. Their main business is to repair Trucks engines & transmissions, making Muzzle-brakes is a kind of hobby due to the Owner has Saiga-12 and likes shooting. They told that "Polygon" design was taken for their PSH-2 but they used Computer based Math models for the Hot Gases for their design, they recalculated the volumes of the first and the second chambers, increased the "window" in the second chamber & improved the "gills" as in number as in geometry making them like nozzles. As everybody knows, nozzle are more effective then standard outlet. The pic of Guns Tuning Laboratories PH-2 The pic of Guns Tuning Laboratories PH-4-S-12-MR The same time Eugeny Efimov improved his own design, adding a couple of gills in the first chamber, and redesigned the second one splitting it for tree compensation chambers. Here is the pic of Improved Efimov MBC with 4 chambers. Ilyn design MBC One of the best MBC on the market based Efimov MBC is GK-01, designed by Vsevolod Ilyn. This Muzzle Brake-compensator does not have a completely new design, but has the most improved "Polygon MBC" design, like Russian T-34 tank is the most improved version of American Christy tank. Using his huge IPSC practice experience for his design, Ilyn used first chamber of Polygon adding 10 similar to PSH-2 MBC or Improved Efimov MBC instead of 8 on "Polygon MBC" & redesign himself the second chamber of "Polygon MBC", that now has a completely new design. He also switched from Steel, that is used for making "Polygon MBC" & "PHS MBC" to Aluminum for his GK-01. Ilyn MBC GK-01 now are made in Russia in cooperation with Vsevolod Ilyn by Molot, Molot Arms, IZHMASH, and in US by CSS, as well as, NoName in China - without. Molot Arms, as well as, IZMASH use D16T Al alloy rods for making their GK-01, Molot , before making their GK-01, prepare Al D16T for production forging Aliminium pigs, as forged aluminium wheels maker do for changing a structure of metal and increasing its safety factor. Now this MBC is well known in US as "Molot GK-01 muzzle brake/ Molot brake", and in Russia as "Ilyn Muzzle Brake-compensator". The pic of Custom Ti Ilyn MBC GK-01 made by Molot The pic of Ilyn MBC GK-01 made by Molot Arms (Al D16T) The pic of Ilyn MBC GK-01 made by IZHMASH (Al D16T) There are some other models of MBC based on Efimov MBC on the market in Russia, here are pics of some of them. The pics of MBC designed & made by "Cheaply"
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