M1 and M14 Trigger Sears

[Bill Ricca]

On the commercial market, over the years, many have grinded the M14 sear down to the M1 dimensions.

Information

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[Bill Hollinger]

Bill, would this then be a controlled part?

[Bill Ricca]

No. As I understand all the automatic parts for the M14 are not controlled. The reason is there is a downward piece with an installation hole on auto receivers. Because the commerciial M1A receivers do not have that piece, none of the M14 auto parts will convert.

[RCS]

It would appear that SA had more than one type of sear design during the pre war period.
Note the "hump" on this sear installed on a revision 2 trigger. Most of the rev 2 triggers are without the hump on the sear.