Irma SR- 100 sniper rifle was developed by German Irma ERMA Company, and it was developed for special forces such as KSK and GSG-9. It is said that high-quality ammunition can be less than 0.3MOA. This rifle participated in the selection test of the German Defence Force sniper rifle together with Mao Se SR-93, but was defeated by AWM-F of British AI company, adopted by the German Defence Force and finally determined as G22 sniper rifle. Now the development of elma SR- 100 sniper rifle has stopped.
SR- 100 adopts rotary pull-back bolt. The diameter of the cylindrical part of the bolt is 22mm. There are three locking lugs at the front end and corresponding locking grooves at the rear end of the barrel.
The shell is forged by aluminum alloy hammer and installed on the stock. The shell is the core part of the gun, and other parts are designed around the shell. SR- 100 has three calibers, namely .308 Winchester. Winchester-Magnum and .338 Lapp-Ma Genan.
The caliber of a rifle can be changed by changing the barrel, bolt and magazine. The barrel is cold forged, with 4.308 caliber rifles and 6.300 and.338 caliber rifles, and the coiling distance is 12 inch. The barrel pushes the sleeve from the front and is locked by an eccentric shaft accessible from the outside.
The eccentric shaft is fixed with a clamping screw, which is screwed to the front connecting screw with an Allen wrench. This locking method has been patented and can be disassembled with ordinary wrench tools, so the barrel is easy to replace. The barrel floats freely without touching the front bracket.
All types of barrels are equipped with effective muzzle brakes. Box magazines have different capacities and different calibers, and can be inserted into magazine slots extending from the lower part of the magazine without change. The magazine release button is two circular buttons, which are located below the shell throwing opening and on both sides of the stock.
The gunstock is milled by plywood, and the length and height of the gunstock plate and cheek plate can be adjusted. The lower side of the front bracket is embedded with a guide rail connecting two tripods or straps, and the side has three ventilation slots. The front end of the front bracket can be connected with an extra length of the front bracket, so that the tripod can move forward if the photographer thinks it necessary.
There is a support for supporting the hoe at the back, and the height can be adjusted. The trigger force and stroke can be adjusted. SR- 100 has a three-position manual fuse. SR- 100 is not equipped with mechanical sight. The top of the case is equipped with a sight mounting guide rail, which is usually about 10 times the size, LeupoldZeiss or Schmidt &; Bender and other brands of attractions.