Sear Housing Blocks?

[chapnelson]

Was about to purchase the Apex FSS kit for an m&p45fs, read the note about needing the new sear housing block as mine is a 2007 model with the 1/16" sear/plunger. Can't find a SHB anywhere!

I had a DCAEK kit I sold off thinking the FSS was the best option. If I scrap the APEX FSS option on this one and leave the original SHB in, what's the best option to improve the trigger? Don't want less than 4# pull. Should I go back to the DCAEK? Will replacing the trigger as well help?

Appreciate your advice in advance!

 

[chapnelson]

I just clicked through Apex again, and all of their kits require the 2011 or newer production sear housing blocks. So is all that's left is a Burwell job, or send it to a 'smith? I've got the tools and wherewithal to replace parts, but I'm not certain about file cutting and polishing.

 

[Ksimons]

I would give Apex a call...

 

[shooter48]

search for this post... "1/8 Sear plunger hole dimensions"
I had mine drilled by a local gunsmith. Works fine no problems.
Just give him this info. should be no problem for him to do.

 

[chapnelson]

I would give Apex a call...

I sent them an email before I posted here, hadn't heard back so I figured I'd ask the good folks here. Apex no longer advertises sales of SHB or modification of SHB, and all of their parts require the post-2010 SHB. If they have a solution for older m&ps it's not advertised.

 

[Saudade]

G&R appears to have the new SHB's in stock. They come with the performance center sear. There's $50 minimum but you may find other parts you can use.

Smith & Wesson at G&R Tactical

 

[shooter48]

before spending $50. or more read my post above. I have the older sear block and had it drilled to accept the 1/8 sear pin with no problems. Should only cost you about $15.

 

[Saudade]

If you choose the "drill it out" method, be aware that the hole is angled. Just in case you think you can simply drill it out yourself.

This is the stock block from my 9C.

 

[shooter48]

If you choose the "drill it out" method, be aware that the hole is angled. Just in case you think you can simply drill it out yourself.

This is the stock block from my 9C.

The sear block is hardened so you can't just use a drill. A carbide end mill need's to be used. A machinist needs to do the work...No problem for him.

 

[chapnelson]

The sear block is hardened so you can't just use a drill. A carbide end mill need's to be used. A machinist needs to do the work...No problem for him.

As a maker of knife shaped objects I can appreciate the distinction of working with hardened steel. Grandfather was a machinist, had a mill at home - he was very handy to have around for many reasons, but sadly both he and the mill are gone now.

Calling around my local options to have the work done, seems like everyone wants a minimum $50 (setting up the mill, etc.) so there's no real cost benefit over ordering one from G&R. And I kinda like the way G&R gives back out of their profits. Seems to me a machinist could run a little side business acquiring old SHBs, drilling them out, and selling them.