Trouble with CMC drop in trigger Ruger AR

Status
Not open for further replies.
Out of what spec? I
GunnyUSMC said:
They are mil spec. But if you compare different lowers you will find that some are cut a little different on the inside where the takedown pin goes.
Click to expand...
They cannot be mil spec lowers since they are not capable of accepting an auto sear. Also "mil-spec" implies far more than simple dimensions. There is a huge battery of quality control that goes into a mil spec lower.
 
mcb said:
Out of what spec? I

They cannot be mil spec lowers since they are not capable of accepting an auto sear. Also "mil-spec" implies far more than simple dimensions. There is a huge battery of quality control that goes into a mil spec lower.
Click to expand...
Well, if you have to be so technical with terms, you could just call them as close to mil spec as the government will allow. :p
 
GunnyUSMC said:
Well, if you have to be so technical with terms, you could just call them as close to mil spec as the government will allow. :p
Click to expand...

True, but apparently not. If the CMC trigger does not fit in the fire control pocket of the Ruger 556 lower and its across the product line, not just this one lower (still undetermined in this thread), then Ruger is not even as close as the government would allow. The mil-spec prints for the M4 and M16 lowers are easily to find on the internet. Anyone with a Ruger 556 lower and a good set of calipers want to start measuring?
 
mcb said:
True, but apparently not. If the CMC trigger does not fit in the fire control pocket of the Ruger 556 lower and its across the product line, not just this one lower (still undetermined in this thread), then Ruger is not even as close as the government would allow. The mil-spec prints for the M4 and M16 lowers are easily to find on the internet. Anyone with a Ruger 556 lower and a good set of calipers want to start measuring?
Click to expand...
But we are also talking about a mil spec lower , let’s not get all technical in terms, and adding a non mil spec fire control group.
Ruger does not make their own lowers. They have them made. Some manufacturers have found that they can leave a little extra metal in place and still fit a mil spec trigger.
 
Maybe I am overthinking things here (it won't be the first time), but a lower with that much out-of-spec variance with the trigger/hammer pins would have me checking sear engagement very closely, even with the best of two piece (non-cartridge_ fire control groups/
 
I have a crappy, creepy, mil-spec trigger group (that was supposedly enhanced) in one lower be nice and crisp in another. It’s the trigger that constantly gets replaced and reused in the New Hotness, but it is so nice in the one it’s in that it will stay, that one needs no better.

I’m not about to go get them all out and measure tonight, but it does make me wonder how different they are...
 
It looks to me like the CMC will fit. I would insert front pin and pivot the assembly down.
 
Status
Not open for further replies.

Similar threads

M
  • Locked
Chip McCormick AR-15 triggers
Replies
2
Views
412
MisterPX
M
Derek Zeanah
  • Locked
SHOT 2024 CMC Triggers
Replies
0
Views
2K
Derek Zeanah
Derek Zeanah
Browning
  • Locked
  • Poll
AR-15 triggers. What do you like? What do you have? What are you interested in trying?
2
Replies
35
Views
3K
Browning
Browning
Z
  • Locked
  • Poll
10/22 trigger for $100
2
Replies
26
Views
1K
RecoilRob
R
JohnB-40
  • Locked
AR Trigger Choices
Replies
16
Views
956
MistWolf
M
Back
Top