Desert Eagle manual page2
Movement
When the recoil springs expand, they drive the slide and bolt forward. During this movement the bolt cannot rotate due to the stabilizer pin which retains it. When the bolt scoops another round from the magazine and inserts it into the chamber, the locking lugs on the bolt come into contact with the recesses in the barrel and the bolt is rotated thus locking the cartridge in the chamber. Now the trigger bar is opposite the recess in the safety and can move upward, thus engaging the sear. When pulling the trigger, the sear releases the hammer which in turn hits the firing pin thus firing the chambered cartridge. (fig. 3)
When the last cartridge is fired and the empty case is ejected, the slide is retained in its rear position by the slide catch. The magazine follower actuates the slide catch.The catch releases the slide when depressed by hand or when the slide is pulled slightly to the rear.
Safety Features
The safety catch levers are located at the rear of the slide, just below the rear sight. They are accessible from either side of the pistol. When pushing the front end of the safety catch lever downward, the safety catch is engaged. In this position the firing pin movement is closed by the safety catch and the trigger bar, which is pushed down, cannot engage the sear, thus neutralizing the trigger (fig. 4).
It should be noted that due to the above features, it is not possible to engage the sear when the bolt is not locking proper ly. Due to the unique blocking of the firing pin by the safety, the pistol will not fire when dropped accidentally on its hammer or on its muzzle when the safety is properly engaged (on "SAFE").
6. OPERATING INSTRUCTIONS
Safety Checks
• Pull hammer slightly to the rear until a click is heard; the hammer is now in semi-cocked position.
• Move the front end of the safety catch lever down into the "SAFE" position.
• Press the magazine catch pin on the left hand side of the pistol and remove the magazine .
• Draw the slide to the rear, check the chamber visually to ensure that the pistol is unloaded and release the slide.
• Point the pistol in safe direction and pull the trigger to check whether the safety is working properly (the hammer should not move).
• Move the safety lever up into the "FIRE" position; a red dot will be visible.
• Pull hammer back slightly and pull the trigger to release the hammer.
8. Pull the hammer into semi-cocked position and move the safety catch lever into the "SAFE" position.
Filling and Emptying the Magazine
Filling
• With the magazine in an upright position, place the cartridge rim on the magazine follower, in front of the magazine lips (fig. 6).
• Press the cartridge down and under the magazine lips to the rear.
• Repeat until loaded (9 cartridges .357; 8 cartridges .41/.44; 7 cartridges .440/.50AE).
Note: Number of cartridges in the magazine can be verified by the indicator holes in the side of the magazine.
Emptying:
• Push the cartridge forward with the thumb.
• Repeat until the magazine is empty.
7. SIGHTS AND ZEROING
Combat sights (Standards)
The standard sights consist of a rear sight and a front sight. Both are combat type. They are designed to ensure rapid and accurate aiming. The square notch on the rear sight is 3 mm wide. The sight line radius is 210 mm.
Adjustable sights
The existing dovetail slots are designed to accommodate front target type sights and rear adjustable sights, available as an accessory option.
Telescopic sight (Mark XIX,.357, .44, .440 & .50)
The 7/8" rib has cross-slots to allow installation of WeaverT M style rings.
Telescopic sight (Mark I, VII, .357, .41, .44)
The existing 3/8" dovetail rib on the barrel is designed to accommodate a telescopic sight mount which is available as an option (#DEP350B).
Zeroing
The Desert Eagle handguns factory zeroed at 1 00 meters. Due to individual eyesight variations, the actual mean point of impact (m.p.i.) may vary; therefore the pistol should be zeroed by its owner.
Windage
Adjust by shifting the rear sight (or the front sight) left or right as required.
8. LOADING AND FIRING
Pre-loading and Pre-firing checks:
• Perform safety checks to ensure that the pistol is not loaded.
• Make sure the barrel is clean and free of obstruction.
• Check that the magazines are clean and properly loaded.
• Always wear ear and eye protection when firing the pistol.
Cocking the handgun:
• Never chamber a round unless you are ready to fire.
• Insert the magazine. The magazine will have about 1/16 inch play when seated properly. Do not push up on magazine when firing or jamming will occur.
• Grasp the slide, pull it all the way back and release it (fig. 8). This operation cocks the hammer and chambers a cartridge.
WARNING:
This pistol is now loaded, cocked with the safety catch lever in the "SAFE" position; therefore, make sure that the barrel is pointed in a safe direction.
Firing the handgun:
With the pistol pointed at the target, move the safety catch lever up to "FIRE" position (red dot will be visible) (fig. 9) and pull the trigger.
Reloading during firing:
The slide remains in the rearward position when the magazine is empty.
• Move safety catch lever to down "SAFE" position.
• Remove the empty magazine.
• Insert a full magazine.
• Release the slide by depressing the slide catch or by pulling the slide slightly to the rear and releasing it (fig. 10).
NOTE:
The pistol is now loaded and cocked with the safety catch lever in the "FIRE position.
Push safety catch up to fire position.
If slide is difficult to release in this manner, proceed as follows: hold pistol with both hands, place left thumb on slide catch, place right thumb on top of left thumb, and then push straight down.
Unloading the handgun
• Place the safety catch lever in the "SAFE" position.
• Press the magazine catch pin and remove the magazine.
• Pull the slide to the rear and eject the chambered cartridge. Check visually that the chamber is empty.
• Place the safety catch lever in the "FIRE" position, point the pistol in a safe direction and lower the hammer with your thumb while pulling the trigger.
• Pull the hammer back into its semi-cocked position and place the safety catch lever in the "SAFE" position.
• Empty the magazine
9. DISASSEMBLY AND ASSEMBLY
General
This chapter deals with those disassembling operations and assembling operations which the user should carry out for routine maintenance of the pistol.
Disassembling or assembling of any other parts is not recommended and will void all warranties.
Warning: safety cylinder
It is possible to assemble the safety cylinder in a back ward/reverse order. If this happens, the safety and fire function indicators will also be reversed. The gun will then fire when on safe. Do not disassemble the safety. For service on safety contact magnum research, inc. Customer service.
Disassembly should be carried out on a clean surface and the disassembled parts should be placed in order of their removal.
FIELD STRIPPING
Carry out the following operations before disassembling:
• Remove the magazine (fig. 5) and engage safety "ON".
• Pull the slide back and check the chamber visually to make sure it is empty. <
• Place the safety catch lever in the "FIRE" position, point the pistol in a safe direction and lower the hammer with your trigger thumb while pulling the trigger.
Disassembly
• Pull the hammer slightly to the rear until a click is heard; the hammer is now in semi-cocked position.
• Move the front end of the safety catch lever down into its "SAFE" position.
• Press the barrel lock pin in on the left side of the pistol and at the same time swing the barrel lock on the other side of the pistol counter clockwise .
• Pull the barrel slightly forward to release it and lift it out.
• Draw the slide forward and remove it . This allows the recoil springs assembly to be pulled forward and easily removed (.357). On .41, .44, .440 and .50 the recoil spring comes out with slide assembly.
• Turn the slide upside down and place it on a level surface.
• Insert the piston into place (fig. 14). Make sure the piston shaft recess is facing the slide recess. The other piston shaft recess will face up.
• Engage piston shaft with recoil spring plate lug and the slide.
• Use your thumb to push the base of the spring plate assembly against the slide, supporting the slide all the way to align the pring assembly in parallel with the slide.
• Keeping the spring assembly parallel to the slide, draw the frame all the way into the slide (do not compress the spring).
6. Stand the handgun upright and verify that the spring ends are correctly positioned in place (2 holes) within the frame (above the trigger).
WARNING: Make sure that the gas piston is in place and cannot be pulled out.
• Insert barrel lock lug into frame recess through the slide.
• Push against the barrel from the muzzle end and hold the barrel assembly against the frame (fig. 1 5). Now swing the barrel lock clockwise into closed position.
9. Check correct pistol operation by cocking and releasing the hammer and verify that the safety is functioning properly and safely.
Mark VII .41, .44 Mark XIX .357, .44, .440, .50
Mark I & VII .357
ASSEMBLY (.357 Magnum Mark I & VII)
1. Insert recoil spring assembly into frame from its front end, open end first with the sharp corner of the spring plate down (rounded forward edge of spring plate up). Now push the recoil spring assembly fully home into its recesses in the frame. It is important to have the spring plate in the proper position.
• Mount the slide onto the frame and draw it to the rear.
• Hold the slide back against slight spring tension and place the barrel lock lug in the slide recess.
• Push against the barrel from the muzzle end and hold the barrel assembly against the frame. Now swing the barrel lock lockwise into its closed position.
• Insert the magazine.
Additional Disassembly and Cleaning Instructions for the Return/Recoil Springs Assembly
NOTE: Because of the spring tension, be sure to wear safety glasses to prevent possible eye injury. Always work in a clean area to prevent loss of small parts.
• Disassemble and clean one side at a time.
• Place the return springs on end with the cross plate down.
• Pull down on one return/recoil spring and hold down.
• Pry C-clip from end of spring rod (C-clip is under tension and will "fly" off if not held under control while moving).
• Slowly release tension on return/recoil spring and remove. Remove spring rod from crossplate.
• Clean rod and crossplate of carbon/lead buildup with steel wire brush or steel wool. Soak return/recoil springs in bore solvent and brush with bronze phosphor brush to remove carbon buildup. Spray with cleaner/ degreaser and lubricate.
• Reassemble by reversing disassembly instructions.
ADDITIONAL ASSEMBLY
Disassembly of the magazine
• Before disassembly, remove all cartridges from the magazine.
• Hold magazine with base facing upward.
• With the combination tool, push base catch inward.
• With catch depressed, slide magazine base carefully forward.
• Keep thumb pressed on magazine base and lift it up slowly to release the magazine spring pressure and remove the magazine base.
• Remove magazine base catch and spring.
• Press follower plunger in with the combination tool and push the follower from the magazine with the cleaning rod.
WARNING:
The magazine spring is under pressure and may be released accidentally, causing injury if not held in place during disassembly or assembly. Do not point maga zine base toward face or other person. Base catch is not attached to spring.
Assembly of the magazine
• Hold magazine with lips downward and partly insert the follower with its flat face downward.
• Press the follower plunger in with combination tool and slide follower into magazine all the way.
• Insert magazine spring.
• Place base catch on spring with small tip pointing up.
• Push magazine base to rear until the base catch engages the base.
Disassembly of the slide
• Make sure the safety catch lever is in the "FIRE" position.
• Push the rear end of the firing pin in with the combination tool and slide the firing pin stop down (fig. 16). The firing pin is now free to be pushed out by its spring.
• Remove the firing pin and its spring.
• Hold the slide upside down and push back with your thumb. Now remove the bolt guide pin with the combination tool
• Release the bolt slowly and remove the bolt assembly, bolt stabilizer pin, spring and pin. 
• Insert the bolt stabilizer - guide pin first. Make sure that its concave part coincides with the bolt housing in the side.
• Insert the bolt into its housing in the slide and compress the stabilizer spring with it.
• Insert the bolt guide pin.
• Make sure the safety catch is in the "FIRE" position.
• Install the firing pin spring and the firing pin, with its "narrow" section facing down
6. Insert the firing pin stop (semicircle part up.) Push the firing pin in with the combination tool and slide the stop further in until the firing pin engages the hole in the stop.
Disassembly of the trigger mechanism assembly
1. Lean the frame on the hammer and horn. Push the grip pin in with the combination tool through the small hole in the bottom of the grip and push the grip cover downward to release it (fig. 20).
2. With both thumbs on the projection at the top of the butt, pull the front edges of the grip backward to remove it from the butt
• Remove the hammer pin and the sear pin with the appropriate punch
• Lift the trigger mechanism assembly from the frame.
Assembly of the hammer / sear mechanism
• Hook the sear onto the trigger bar and press the hammer mechanism assembly down; make sure that the pointed bottom ends of the hammer mechanism assembly engage the rear of the frame.
• Insert the hammer pin and the sear pin into their respective holes.
• Replace the grip partly over the butt and then squeeze the grip home with your hand.
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