New members must contact admin@mg42.us to have their account activated. Please include your username.

salt

The Buffer

The #1 place for MG42 answers.
User avatar
drooling idiot
General
General
Posts: 1495
Joined: Sat Mar 12, 2005 9:30 am
Location: Philla ,PA

The Buffer

Postby drooling idiot » Tue Jan 10, 2006 5:34 pm

What is it ?
The buffer is the part of the gun that locks the butt-stock to the receiver.
Image

What does it do ?
It serves as a recoil damper, a holder for the recoil spring, a mount for the butt-stock , and an actuator for the ejector.

Where does it go ?
At the rear of the receiver. It locks into cams that are riveted to the inside of the receiver .
shown in this pic by the red arrows.
Image

How does it attach ?
it should slide into the receiver and twist 90 degrees to lock into two cams placed inside of the receiver at the rear. It is held in place from twisting loose by a small buffer catch on the bottom of the receiver.
Image
^ above buffer latch group - attaches to bottom of receiver
V below rear of buffer were buttstock attaches , NOTE - larger notch on bottom for buttstock catch.
Image

What are the different types ?
Well , the obvious two are the original " MG42 type " that locks in with a counterclockwise motion, and the latter " MG3 type " designed to work with the MG3 recuperator( Recuperator sticky ) with the long tail. This latter style is designed to lock in with a clockwise spin.
less obvious are the differences in post war and war time buffers. they look identical to the eye but the war time buttstocks do not fit post war buffers correctly as the thread pitch or depth is slightly different.

Are they compatible ?
YES and NO, as described above.


How many pieces should i have ?
    6 total

    1) the main body
    2) 1 long bolt
    3) 1 internal sleeve
    4) 1 coiled heavy spring
    5) 1 nose cap piece
    6) 1 cotter pin or roll pin
shown in picture (buffer group) but not included in this list are buffer latch , roll pin and spring as these are related but mount to the bottom of the receiver.

How do i assemble it ?
This buffer group picture shows the parts lay-ed out in order they reassemble.
Image

What modifications are required to convert the buffer to work in the semi-auto SA42 ?
some guns will require the buffer screw head to be drilled out for more clearance for the firing pin. Some members recommend grinding the nose cap into a tapered shape to ease its entering the bolt extension to strike the ejector button on the rear of the bolt.

What modifications are required to convert the MG42 Buffer to work with the MG3 recuperator ? a notch for the buffer latch will need to be cut into the other lobe (180 degrees out) of the cam locking area. Also the small notch on rear of the buffer will need to be cut for the buttstock locking latch to the same size as the big one.
Last edited by drooling idiot on Tue Jan 23, 2007 5:53 pm, edited 3 times in total.
"good , bad, .....I'm the man with the gun." Image

Its amazing anything works right around here with a bunch of
over-age juvenile delinquents running the place.

User avatar
drooling idiot
General
General
Posts: 1495
Joined: Sat Mar 12, 2005 9:30 am
Location: Philla ,PA

Postby drooling idiot » Tue Jan 10, 2006 6:34 pm

wanted to add
pic of a comparison of how a German buttstocks fit on German and Yugo buffers.
Image
Yugo on top , German on bottom . NOTE gap on the Yugo buffer.

next two pictures TRY to show how the thread pitch is slightly different on the different buffers.
Image
Image

close up of the rear of a German buffer. NOTE the recessed ring at the very back of the threads. this is the only way to visually tell which type you have.
Image

close up of the rear of a Yugo buffer on the left. NOTE the LACK OF a recessed ring at the very back of the threads.
Image

Top view of Yugo Buffer
Image
"good , bad, .....I'm the man with the gun." Image

Its amazing anything works right around here with a bunch of
over-age juvenile delinquents running the place.


Return to “MG42 Stickies Section”



Who is online

Users browsing this forum: No registered users and 2 guests

 : This site contains information on legal MG42 semi- and full-auto firearms. The information in these web pages is not intended to be used to construct illegal devices, all NFA rules apply. Although items from WWII Germany may be displayed or discussed, we do not advocate or approve of, or have any association with Nazi/Fascist organizations nor do we endorse such organizations.