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9/22/2017 12:11:25 AM
Posted: 1/23/2006 9:04:03 AM EDT
Link Posted: 1/23/2006 10:54:23 AM EDT
would like to know as well, right now im using the jp yellow springs.
Link Posted: 1/24/2006 10:08:53 AM EDT
Rock River told me their trigger would not work with 9MM hammer.

JP said their single stage will work with Rock River 9MM hammer
Link Posted: 1/24/2006 10:31:43 AM EDT
The RRA 2 stage would work if you had your bolt ramped.
Link Posted: 1/24/2006 8:51:10 PM EDT
I have an Olympic 9mm upper on a PWA lower with a Rock River two stage installed and it works fine.
You didn't state what type of upper you have.
Link Posted: 1/24/2006 9:22:35 PM EDT
[Last Edit: 1/24/2006 9:23:02 PM EDT by majine]
I've recently purchased a RRA 9mm upper (Colt style) so I can take my AR to the local indoor range.

I haven't had an opportunity to test fire it (still waiting on other parts), but I've cycled the bolt (non-ramped) with my Knight's 2-stage trigger. The hammer locked back fine, without binding. I've dry-fired many times, and it seems solid.

I'm slowly building up my 9mm, so I don't expect to shoot it anytime soon. Because of this, I can't give you a definite answer as to whether or not it will work. However, the problem with 9mm/5.56 seems to revolve around the 5.56 notched hammers binding/locking the action in Colt-style systems.

Short story, if you have a Colt derived 9mm, go with a standard 9mm hammer, or get the bolt ramped to use any 2-stage trigger system.

From what I've heard, the Oly system allows any type of trigger to be utilized.

In my case (non-ramped RRA 9mm), the Knight's trigger seems to work fine.
Link Posted: 1/25/2006 5:33:09 AM EDT
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