27-2 Hammer Block missing

[Muley Gil]

It's possible that this M27 shipped with a standard hammer and the narrow .265" trigger. A previous owner may have installed the TH and TT and never fitted them correctly, resulting in the poor double action function. He's probably the one who tossed the hammer block.

 

[Protocall_Design]

An N frame can have every bit as good an action as a K or L frame, you just have to know what to do.

The only reason the hammer block causes friction is because it is stamped out on a punch press. This leaves a broken edge all around the outside, and also inside the triangle hole at the bottom. That is the nature of a punched part. The only thing that matters is the hole, because it rides on the pin of the rebound slide. All you have to do is use a needle file to smooth down the 2 long sides of the hole, and you will never be able to feel there's a hammer block in there. It only takes a couple of minutes.

On reassembly, the hammer block needs to stay in the uppermost position until the sideplate is seated. Put the hammer block in position, raise the grip frame to roll the gun up on the barrel, and seat the sideplate. Gravity holds the hammer block in position. Then you can lay the gun back down and put in the sideplate screws.

 

[elpac3]

When I was on the street back in the 70’s, it was common practice for department armorers to remove the hammer block. Right or wrong, that was their practice

 

[Patrick L]

Polishing up the innards on a S&W is not rocket surgery. I have done several. If you are mechanically inclined it's not hard. I agree, avoid the YouTubes unless it's by someone competent. Kuhnhausen's book is excellent.

2 things though; 1. STAY AWAY from the SA notch on the hammer. You can't improve that and you most definitely can ruin it easily. 2. FOR GOD'S SAKE leave the dremel in the drawer and use proper hard stones, maybe some stone backed 600 grit paper and do it by hand.

And no I'm not a dremel hater, they are wonderful in certain applications. This isn't one of them.

Just my .02

PS I never removed a hammer block. I might lightly polish the edges on oiled backed 600 paper, do the same on the slot it rides in, but that's it. It needs to be bad to cause any issue any normal shooter could detect