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Match Marks - Why/Where
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Match Marks are small identifiers, made in pairs, on pieces that join, or are fastened together. They serve to inform you, or others, of the correct assembly procedure, of a mechanical system. Sometimes they serve to indicate when the pieces are in correct alignment.
Here Ý Ý Ý are two very common match marks. One is a line on the torque shoulder of a barrel, while the other is on the front ring of a receiver. These marks were made AFTER the initial barrel installation. They serve to tell when the barrel has been tightened to the same location during a barrel remove/reinstall. Many match marks are made AFTER a unit has been assembled. These all serve to help in REASSEMBLY, at some future time.
These match marks Ý Ý Ý serve to indicate the correct assembly of two scope rings. If the scope is removed, and the upper halves are mixed up, they can be reinstalled in EXACTLY the same locations. Note that the left most ring-halves have two center-punch marks while the right most have only one. These are on a match rifle and don't look very good.
Here Ý Ý Ý is a set of rings to be installed on a "nice" rifle. Can you find the marks?
The upper and lower halves can be matched, but the marks are concealed.
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