Brian Poling - MG-42 SA. Belt-Fed Semi-Automatic Rifle (2004).pdf - World War II(3) - bogg

MG-42 SA

Owner’s Manual

Belt-Fed Semi-Automatic Rifle

MG-42 SA Rev. 2, Page 1

The Essentials of Running The MG-42 SA:

Following these steps will help you use this complex system reliably, prevent

malfunctions, dangerous operation, and damage.

1) Training: All current or prospective customers are encouraged to make an

appointment to come to our shop in Maryland for training. We will show you how to

properly use and care for the MG-42 SA. To make an appointment call (301)807-5234.

2) Correct Ammo: (See pages 41 & 42 of this manual) There have been a wide

variety of 8mm weapons produced in the 20th Century by numerous countries. Much

of this ammunition is not suitable to run in an automatic belt-fed firearm.

3) Correct Belts: During the 20th Century there were dozens of belt-fed machinegun

designs that have been produced by numerous countries. Belts designed for one type

of machinegun often look a lot like those of another. Many companies in the US sell

belts for the MG-34, MG-42, and M-53 that are not actually belts designed for use in

these weapons. We have seen numerous VZ, MG-3, and Swiss MG belts in the US

market that will not function in firearms designed to run with the German-type MG-34/

42 belt. Running an incorrect belt will likely result in damage to the feed mechanism.

4) Lubrication: Use plenty of lubricant such as Ballistol or Break Free on the rails,

bolt, feed mechanism, and belts during use. Unless you are in the desert, run the MG-

42 SA ‘wet.’ Avoid using WD-40 because it is flammable and may result in excessive

chamber pressures.

5) Cleaning: (See pages 38, 39, and 40 of this manual) When cleaning the MG-42

SA, pay special attention to cleaning the bolt head, barrel, entire booster assembly and

surrounding receiver area. Pay special attention to the front of the MG-42 SA. This is

the exit point for all of the gasses and residue. This includes the flash-hider, booster

cone, barrel sleeve, barrel crown, and receiver bushing. These parts must be

thoroughly and aggressively cleaned after extended used because the corrosive

residue becomes ‘baked-on.’

6) Inspection: (See page 43 of this manual) After cleaning, fully inspect and

reassemble the MG-42 SA. Once fully reassembled, load and cycle some dummy

rounds through the system to check for proper function.

MG-42 SA Rev. 2, Page 2

MG-42 Semi-Auto (SA) Manual

The MG-42 SA is a highly complex and sophisticated system that requires knowledgeable operators.

Full and complete adherence to the following instructions is an absolute necessity for safe and re-

sponsible use of the MG-42 SA. This system is NOT meant for anyone other than individuals knowl-

edgeable in the safe operation of belt fed systems and who have a thorough understanding of semiau-

tomatic and automatic firearms. If you are not such an individual you pose a danger to yourself and

those around you by using this system.

The following MG-42 parts and accessories will not work with the MG-42 SA:

• Bolt Carrier

• Trigger Housing and Internal Trigger Housing Parts

• Short Recoil Assembly

• Firing Pin and Guide

• Cocking Handle

• Mainspring

The following MG-42 parts and accessories will work with the MG-42 SA:

• Belts and Belt Drums

• Slings

• Sights

• Ejector

• Ejector Rod

• Complete Bolt Head Assembly

• Bipod

• Barrel

• Buttstock

• Buffer

• Feed Cover and Feed Tray

The Differences Between the Original MG-42 and the MG-42 SA

The MG-42 SA fires from the closed-bolt position using a conventional Hammer/Trigger/Disconnector setup

similar to AR, AK, and HK rifles. The double-torsion spring setup is taken directly from an AR. The trigger

housing has been modified accordingly to house these parts. It is slightly longer and wider than the original

and mounts differently to the receiver. An original MG-42 trigger housing cannot mount to the MG-42 SA

receiver.

The firing pin is a floating type with a spring positioned to the front to prevent slam-fire. When the bolt is fully

locked into the barrel collar, the firing pin can be struck from the rear by the hammer to ignite the round. To

accommodate the hammer-strike the bolt carrier is longer than the original MG-42 bolt carrier,and the main-

spring is shorter than the original MG-42 mainspring. Also, the bolt carrier has a smooth bottom to allow the

hammer to cock and rub the underside of the bolt carrier during cycle. An original bolt carrier will not fit into

the MG-42 SA receiver. Since the bolt carrier does not have the same cocking surface as the original, the

cocking handle has been modified to accomodate the cocking surface on the MG-42 SA bolt carrier.

MG-42 SA Rev. 2, Page 3

Safety – Your Responsibility

SAFETY MUST BE THE FIRST AND CONSTANT CONSIDERATION OF EVERY PERSON WHO HANDLES

FIREARMS AND AMMUNITION. This manual is designed to assist you in learning how to use and care for this

system properly.

Only when you are certain you fully understand the manual and can properly carry out its instructions should

you practice loading, unloading, etc. with live ammunition.

If you have doubts about your ability to handle or use this particular system safely, then you should seek

supervised instruction. Such personalized instruction is often available from gun dealers, gun clubs or police

departments. If none of these sources can help you contact the National Rifle Association. You are also

encouraged to contact BRP CORP for assistance.

The person with a gun in his possession has a full-time job. He cannot guess; he cannot forget. He must

know how to use his firearm safely. Do not use any firearm without having a complete understanding of its

particular characteristics and safe use. Remember: There is NO such thing as a foolproof gun.

Basic Safety List

• A loaded firearm has the potential to kill. Intelligently handled it is safe.

• An accident is always the result of basic safety rules neglect.

• Accident prevention is user responsibility.

• Never point a firearm at anything you don’t want to shoot.

• Before handling a firearm be sure to use correct and undamaged ammunition.

• Be sure your firearm is clean – before loading inspect the barrel to insure it is perfectly clean and free of

foreign objects. Shooting with an obstruction in the barrel such as dirt, mud, grease, lodged bullet or jacket,

residues, etc, can cause barrel bulging and/or rupture.

• Never assume that the chamber is empty, visually inspect it every time you handle the gun.

• Avoid alcoholic beverages or drugs before and during shooting.

• Avoid hard hitting or dropping of a loaded firearm.

• Store firearms and ammunition separately, beyond the reach of children. Be sure cartridge chamber is

empty.

• Thoroughly clean the firearm to prevent corrosion.

• Wear eye and ear protection.

• Firearms Safety Course is recommended.

• Handle it with respect not fear.

MG-42 SA Rev. 2, Page 4

Design of the Weapon

1. Housing

2. Barrel

3. Bolt

5. Feed Mechanism

6. Pistol Grip with Trigger Housing

7. Cocking Slide

8. Rear Covers

9. Butt

10. Bipod

11. Sling

12. Recoil Booster, Recoil Nozzle, and Barrel-Guide Sleeve

13. Recoil Spring

Preliminary Remarks

The terms “righthand” and “Iefthand” used in the following description of the assemblies and of the functioning

apply to the position of the weapon in firing direction (seen from the gunner).

MG-42 SA Rev. 2, Page 5

Brian Poling - MG-42 SA. Belt-Fed Semi-Automatic Rifle (2004).pdf

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