CC-Diemaco C7/C8 trigger pin size

UR2X3M4ME

UR2X3M4ME

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Can someone confirm Trigger and Hammer pins diameter for a Colt Canada Diemaco SA15.7 or SA20 lower?

I'm asking because I want to drop in a new Geissele trigger and I need to get one with the proper size pins.

I understand it is typically 0.154" but I also know that many Colts use larger pin diameter at 0.159". Thanks in advance.
 
Got my Geissele G2S Two-Stage Trigger from Brownells. fits like a glove.

11870927_10153605277168552_7796102021768471002_n.jpg
 
Geissele SD-E small pins ordered with peace in mind.

As a thank you, I will share that I have a S3G fitted on my 3Gun AR. Tends to bump-fire when I bench-rest shoot it... :)
Priceless to see shocked faces on the firing line when the content of a LAR-15 mag is spent in less than a blink :evil:
Note to self: 1 round mag when zero'ing optic will keep safety officer away...
 
TW25B said:
Can you elaborate on that??

TW25B
Click to expand...

He's not wrong.

Back then there were not so many copies of the AR15.

Colt's introduced the large trigger pins in 1991 when the assault rifle ban was working through congress in an attempt to work with BATF to avoid more stringent restrictions. The concern was military auto parts were too easily interchanged.

There were a number of other changes as well over the years to satisfy various government agencies or in response to lawsuits, etc.

The first AR15 Sporter prototypes were submitted to the Treasury Department (prior to the creation of BATF) in 1963 with the original 9 changes to prevent automatic fire.

Then there were cutaway carriers, more cutaway carriers, the so called "anti-slam fire" mechanism was introduced 1969, the auto sear block, etc. BATF asked for a number of changes over time. Most of these disappeared over time and Colt's ceased most of the later versions by 2009.
 
Matt K said:
He's not wrong.

Back then there were not so many copies of the AR15.

Colt's introduced the large trigger pins in 1991 when the assault rifle ban was working through congress in an attempt to work with BATF to avoid more stringent restrictions. The concern was military auto parts were too easily interchanged.

There were a number of other changes as well over the years to satisfy various government agencies or in response to lawsuits, etc.

The first AR15 Sporter prototypes were submitted to the Treasury Department (prior to the creation of BATF) in 1963 with the original 9 changes to prevent automatic fire.

Then there were cutaway carriers, more cutaway carriers, the so called "anti-slam fire" mechanism was introduced 1969, the auto sear block, etc. BATF asked for a number of changes over time. Most of these disappeared over time and Colt's ceased most of the later versions by 2009.
Click to expand...


Excellent, this is what I wanted to see. Learn something new every day. :)

TW25B
 
Although your original question has been answered, take the time to watch the video from Bill Geissele. This video has been posted before, but he goes into detail about the reasons for and how to check which pins you have. A great video on his triggers and clear understanding of the characteristics each have.

Anyone new to, or buying a Geissele trigger for the first time, strongly recommended watch.

 
I also have a couple Colt Canada lowers with the large trigger pins. As has been mentioned they are not used on the newer CC guns. Geissele makes some large pin trigger kits and they are superb, as all their stuff is.
 
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