NPM Carbines and Umderwood parts

[painter777]

Why would an armor change a recoil plate when replacing a rear sight?

2 reasons I could think of...
1 being if the lock up to the receiver wasn't tight enough.
2nd being if it was a change over, swapping out the first style for the later/straight back one.
Cause he had a hard nosed Sgt standing over his shoulder.

As for the adj site. For shooting I much prefer. If shooting at someone because they are shooting at me or buddies, Type II or III sight would be most desired. Don't beat yourself over a misc part, many original internal parts have been swapped out thus tossing true history.

JMHO,
CH-P777