Receiver punch marks

[frankderrico]

Can some one tell me what these punch marks are for? Thanks....Frank:sos:http://i461.photobucket.com/albums/qq335/frankderrico/QHMC6.jpg

[Newscotlander]

Those small ones on the right side of the receiver are common and I believe that they are Rockwell hardness tests.

[STU1]

Those small ones on the right side of the receiver are common and I believe that they are Rockwell hardness tests.

correct, that is what they are.

[frankderrico]

Thank you....Frank