Hammer & Trigger Pin

AR/M4 AR Technical Discussion
1

I have a SP1 and was wondering if there is a correct way to insert the hammer & trigger pin?

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2

Make sure the hammer spring leg is on top of the trigger pin and that one of them is in the grove.

3

I was referencing the pin itself, one end about a 1/8" in is cut and the other end isn’t. Was just wondering if it matters what side the cut end is inserted.

4

doesn’t matter - the spring leg should catch in a groove either way