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Ultimax 100 Mkiii Manual

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Ultimax 100 Mkiii Manual TECHNICAl MANUAl Operation, Maintenance, Repair and Replacement Parts 7/LT/MAX 100 LMG 5.56 MM MARK · III CHARTERED INDUSTRIES OF SINGAPORE A member of the Singapore Technology Corporation ~ FIREARMS SAFETY SAFETY MUST BE THE FIRST AND CONSTANT CONSIDERATION OF EVERY PERSON WHO HANDLES FIREARMS AND AMMUNITION. This Technical Manual is designed to assist you in learning the proper use and care of your Ultimax 100 Mark Ill LMG. Read the instructions and warnings in this manual carefully before using the LMG .. Do not handle any firearm without hailing a complete understanding of its peculiar charact­ eristics and safe usage. Note : Due to the continuous efforts spent in upgrading the design , it is possibble that certain descriptions contained in this manual may vary from the actual weapon . CONTENTS PAGE SECTION 1- INTRODUCTION 3 1.1 DESCRIPTION OF THE UL TIMAX 100 MARK Ill 1.2 PHYSICAL AND PERFORMANCE CHARACTERISTICS SECTION 2- OPERATING INSTRUCTIONS 5 2.1 SAFETY PROCEDURES 2.2 PREPARATIONS BEFORE FIRING 2.3 LOADING, FIRING AND UNLOADING 2.4 SIGHTS ADJUSTMENT 2.5 ADJUSTMENT OF GAS REGULATOR 2.6 HANDLING OF THE BIPOD 2.7 IMMEDIATE ACTION, STOPPAGES AND REMEDIES SECTION 3- STRIPPING AND ASSEMBLING 16 3.1 MAl N GROUPS 3.2 FIELD DISASSEMBLY AND ASSEMBLY 3.3 DISASSEMBLY AND ASSEMBLY BY ARMOURER SECTION 4- MAINTENANCE 26 4.1 GENERAL 4.2 CLEANING 4.3 LUBRICATION SECTION 5- AMMUNITION 28 5.1 AMMUNITION 5.2 DESTRUCTION OF MATERIAL TO PREVENT ENEMY USE SECTION 6- ACCESSORIES (OPTIONAL) 30 6.1 BLANK FIRING ATTACHMENT 6.2 SLING 6.3 MAGAZINES 6.4 REAR SLING CLIP 6.5 CANVAS BAG APPENDICES 33 APPENDIX 1 - EXPLODED VIEW APPENDIX 2 - RECEIVER BODY AND TRIGGER MECHANISM APPENDIX3- BOLTCARRIERASSEMBLY APPENDIX 4 - BARREL AND GAS SYSTEM ASSEMBLY APPENDIX 5 - BUTT ASSEMBLY APPENDIX 6 - REAR SIGHT ASSEMBLY APPENDIX 7 - BIPOD ASSEMBLY 2 SECTION 1 INTRODUCTION 1.1 DESCRIPTION OF THE ULTIMAX 100 MARK Ill The Ultimax 100 is a one-man portable, magazine-fed, gas-piston operated, rotating bolt, air-cooled light machine gun . It can be fired from the shoulder, hip, and off a bipod. Although it only fires in the full automatic mode from an open bolt position, single shot can easily be achieved through trigger control. It feeds from either a 100/60 rounds drum magazine or a slightly modified standard box mag ­ azine. It can be stripped and kept in a canvas bag for ease of manoeuvre. This Mark Ill version adopts a heavy air-cooled detachable barrel which can sustain 500 rounds of full automatic fire without heat damage. Prolonged continuous firing can thus be achieved by fitting in a new barrel. The flash suppressor also serve as a rifle grenade launcher and bayonet support. The weapon can be used for firing blank firing attachment. A handle is assembled onto the gas block for balanced carriage of the weapon and facilitate quick change of the barrel. The rear sight is marked in 100 metre increments out to 600 metres. It is fully adjustable for range with a slide plunger sight and for traverse with both front or rear windage screw. A unique lock-out mechanism incorporated on the trigger mechanism prevents accidental firing when the weapon is improperly cocked or dropped. The fire selector has two positions, 'F' (FIRE) and'S' (SAFE). On'S' the trigger is blocked, breaking the connection between trigger and sear. On 'F' the trigger engages the sear to allow forward motion of the bolt carrier for firing. The weapon can be fired without the buttstock (which is easily detachable) because of its low recoil. This configuration in conjunction with a short para-barrel is ideal for deployment in confined areas and for paratroopers. The bipod legs have incremental length adjustment and can be positively locked in either the ready or off positions. The bipod is also designed to allow a 30° roll and 30° sweep of the weapon. The entire bipod can be easily detached and assembled without tools. The cocking handle is located on the left hand side of the receiver and does not cycle with the bolt carrier during firing. The Ultimax has a gas regulator with 5 position gas setting which allow the weapon to operate under varying conditions. The return gas can also be sealed off completely for firing rifle grenades. This is absolutely necessary for weapon without semi automatic mode of firing. The use of a high pressure gas system prevents fouling, therefore minimising the need for periodic cleaning. Fig. 1 Ultimax 100 Mark Ill with 100 rounds drum magazine. 3 1.2 PHYSICAL AND PERFORMANCE CHARACTERISTICS 1.2.1 PHYSICAL DATA Lengths : Gun overall with buttstock 1030 mm (40.6 inch) Gun overall without buttstock 800 mm (31 .5 inch) Receiver (without barrel and 485 mm (19.09 inch) buttstock) Barrel (without flash suppressor) 508 mm (20.0 inch) Weights: Gun empty without bipod 4.4 kg (9.68 lb) Spare barrel 1.56 kg (3.751b) Bipod 0.45 kg (0.99 lb) Empty 100-round drum magazine 0.57 kg (1.25 lb) Loaded 100 -round drum magazine 1.76 kg (3 .88 lb) Gun with fully loaded magazine, 6.78 kg (14.91 lb) buttstock, bipod and sling Barrel : Calibre 5.56 x 45 mm Rifling 6 grooves, right hand twist, 1 turn in 305 mm (for M193 ball) or 1 turn in 178 mm (for SS 109 round) Cooling Air 1.2.2 PERFORMANCE DATA Type of operation Gas (with piston cyclinder and gas regulator) Recoil Constant reaction Locking system Rotary Bolt Muzzle Velocity (m / s) 990 (for M193 ball round) 945 (for SS 109 round) Cycle rate of fire (RPM) 400-600 Effective range (m) 460 (with 1 turn in 305 mm barrel and M193 round 1300 (with 1 turn in 178 mm barrel and SS 109 round) Accuracy (max. dispersion at 100 yards) 8inch NOTE: 1 turn in 305 mm rifling is the standard barrel for the Ultimax 100. 1 turn in 178 mm rifling barrel will only be available on special request. 4 SECTION 2 OPERATING INSTRUCTIONS 2.1 SAFETY PROCEDURES It is a safe practice to clear the weapon before proceeding with any stripping exercise. Clear weapon by performing the following operations Fig. 2. 1a Remove magazine by Fig. 2. 1 b 1) Cock the weapon by twisting depressing the magazine the knob anti-clockwise and catch on the right hand side pull back fully then return of the rece iver. knob to original position. 2) Put selector on 'S' position. Fig. 2. 1c Inspect chamber and put Fig. 2.1d Point the weapon in a safe selector on 'F' position direction, pull the trigger and put selector back to 'S' position. 5 2.2 PREPARATIONS BEFORE FIRING Before firing, clean and lubricate weapon as instructed in SECTION 4. Before loading, always check to ensure that the barrel is clear and the bore un­ obstructed. Firing the weapon with any obstruction in the barrel may result in severe damage to the weapon and serious injury to the firer. If the bipod is to be used, the bipod legs should be adjusted to the position which suits the terra in . 2.3 LOADING, FIRING AND UNLOADING 2.3.1 Clear weapon as described in SECTION 2.1. 2.3.2 Cocking the weapon To unlock cocking handle, grab knob with left hand and turn anti-clockwise Pull cocking hand le to rear until bolt carrier catches on bolt sear. 6 Push the cocking handle forward to original position as shown. ~. ·-" Ensure that the selector lever is in 'S' position. Note that the bolt carrier is in the open position. 2.3.3 LOADING With the muzzle p'ointed towards a safe direction, hold the pistol grip with one hand. Insert a loaded magazine into magazine housing until the magazine catch engages and holds the magazine securely (Fig. 2.3.3). Fig. 2.3.3 Loading the magazine. The weapon is now loaded and ready to fire. The selector lever should be in 'S' position when not ready to fire. It is a good practice for firer not to have his finger on the trigger when no firing is intended. 7 2.3.4 FIRING Flip selector lever to 'F' position and squeeze trigger (Fig. 2.3.4). The weapon will continue to fire until either the magazine is emptied or the trigger is released. When trigger is released, bolt carrier will remain open if magazine still contains rounds. Fig. 2.3.4 Automatic Fire If the magazine is empty, the bolt carrier wi II be in the closed position. WARNING : Bolt carrier will also be in closed position when a misfire occurs. In such case, carry out immediate action procedure as given in SECTION 2.7. 8 2.3.5 UNLOADING Ensure that the selector lever is switch to 'SAFE'. Point weapon towards a safe direction and release magazine catch. Clear the weapon as described in section 2.1 2.4 SIGHTS ADJUSTMENT 2.4.1 FRONT SIGHT The front sight has both elevation and windage adjustment. To raise the mean point of impact depress the detent front sight and turn the post front sight clockwise. Fig. 2.4. 1a Adjustment of Post Front Sight. One click in clockwise "direction will raise the mean point of impact by 25mm at 100m. Similarly, one click in anti-clockwise direction lowers the mean point of impact by 25mm at 100m. Depress adjusting screw front sight and turn the square shoulder (Fig. 2.4.1 b) for windage adjustment. There are four clicks in 1 complete revolution; one click clockwise moves the mean point of impact 25mm to the left at 1OOm.
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