- Oct 8, 2007
- 19,012
whats going on with this ar hammer?
- Thread starter lee2
- Start date
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photoracer
Competition Shooter
That's the DIY speed hammer mod. If you are too cheap to buy the JP Speed Hammer that is what some do. Its mainly for 3-gun shooters. I have the real deal in one of my ARs although I usually dropped a Geissele S3G into anything that was speed shooting.
- Jul 29, 2014
- 50,032
Yup. Has the notch.
clandestine
AR-15 Savant
As mentioned, that is a common "high speed" hammer modification. When you install light springs you often have to reduce hammer mass. This is the correct way to do it.
The hammer is a notched semi auto hammer.
The Colt Expanse comes this way out of the box. JP Hammers are designed with this principle of low mass.
The hammer is a notched semi auto hammer.
The Colt Expanse comes this way out of the box. JP Hammers are designed with this principle of low mass.
- Oct 8, 2007
- 19,012
i appreciate your reply.
i understand what you are saying, but arent the lighter springs supposed to be color coded? these are not.
clandestine
AR-15 Savant
You are correct, but sometimes people bend the factory springs instead of buying replacements, which I dont think is good. Perhaps this is the case here?
Brake cleaner will also strip the paint off of springs too. Some people use that instead of gunscrubber.
I think the Colt expanses come with a standard hammer spring and the hammer is silverish looking.
Is this a Colt?
clandestine
AR-15 Savant
Here is pics I found online from a colt expanse. Very similar to yours.
http://www.m4carbine.net/showthread.php?180099-Picked-up-a-Colt-Expanse-M4-(CE1000)-today
http://www.m4carbine.net/showthread.php?180099-Picked-up-a-Colt-Expanse-M4-(CE1000)-today
iH8DemLibz
When All Else Fails.
Light hammer spring and a Mil-Spec hammer spring.
Mil-Specs have an extra turn. Or you could say light springs have one less turn. True 100% of the time? Don't know.
Sorry I couldn't get my foot in the pic. Hope it helps.
Mil-Specs have an extra turn. Or you could say light springs have one less turn. True 100% of the time? Don't know.
Sorry I couldn't get my foot in the pic. Hope it helps.
- Oct 8, 2007
- 19,012
not a colt. bushmaster upper with an anderson lower. i will be pulling it down for inspection.
- Oct 8, 2007
- 19,012
thanks for the link, you are correct, it does look very close.
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