Anti Rotational Pins...

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12 years 4 months ago #24841 by BUILDING MY SASS
Replied by BUILDING MY SASS on topic Anti Rotational Pins...

faawrenchbndr wrote: I use the KNS pins on my 9mm pistol........later to be an SBR
Geissele does NOT recommend using them with his triggers.
The Armalite pins are a "anti-walk" design, not "anti-rotate"

It is a toss up as to wether they are needed or not. Many standard trigger pins break in the blow-back ARs. The 9mm and .22LR are very hard on pins, the chance of breaking them with the 9mm is greatly reduced with the use of a "ramped" bolt assy.


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Being these are SS...I can't see them Breaking...unless there is another issue...Nice looking Stick by the way....Oh yeah...
BMS

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12 years 4 months ago #24844 by jtallen83
Replied by jtallen83 on topic Anti Rotational Pins...

BUILDING MY SASS wrote:

jtallen83 wrote: Good deal! That was the next thing on my "must do" list.
:usa:


You won't regret it...Be mindful of the Pin size...if you don't have alot of rounds through your 10...get the .154s... ;)
Look forward to seeing a Pic or two.... :thumbs:
BMS


Wow! You have ESP! That was my next question after looking at what was available. I'm around 800 rounds, I can see the pins turn some but they don't seem to be loose at all. :twothumbs:

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12 years 4 months ago #24857 by SOC
Replied by SOC on topic Anti Rotational Pins...

BUILDING MY SASS wrote:

SOC wrote: I've been thinking about adding the KNS anti-rotation pins to my AR-10TU to complement the Geissele SD-E trigger.

I'll let you guys know if it effects the feel of the trigger at all.


To be sure...contact them to make sure that they are compatible...
BMS


Contacted them on their web sight yesterday. Just waiting for a reply.

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12 years 4 months ago - 12 years 4 months ago #24858 by faawrenchbndr
Replied by faawrenchbndr on topic Anti Rotational Pins...
Contacted them about six months ago.........
He does not recommend the KNS pins, but, as long as you are not
using the high speed trigger, they will function with his trigger.
However, the Geissele pins are much higher quality than the KNS.

KNS non-rotational pins and SSA/SSF = GO.

KNS non-rotational pins and Hi-Speed = NO GO.


That information is per Bill Geissele
Last edit: 12 years 4 months ago by faawrenchbndr.

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12 years 4 months ago #24862 by SOC
Replied by SOC on topic Anti Rotational Pins...

SOC wrote:

BUILDING MY SASS wrote:

SOC wrote: I've been thinking about adding the KNS anti-rotation pins to my AR-10TU to complement the Geissele SD-E trigger.

I'll let you guys know if it effects the feel of the trigger at all.


To be sure...contact them to make sure that they are compatible...
BMS


Contacted them on their web sight yesterday. Just waiting for a reply.


Here is the reply I got back.

Hello

We recommend that you use the GA pins that came with the trigger. Our GA pins are hardened, precision ground to our specs while the anti-rotational pins are softer. This may cause a burr to be pulled up during the install and they do not fit as precise as the pins we supply with the trigger. Thank you for the inquiry

Thank You
Stan Fanelli
Assistant Assembly Shop Manager
Geissele Automatics
1920 W. Marshall St
Jeffersonville PA 19403
Phone 610-272 2060
Fax 610-272-2069

Not sure about how much harder the Geissele Automatics pins could be when compared to KNS.

I think I'll Mic the GA pins when I get a chance and order the KNS pins based on that.

I'll try them and let you guys know what I determine with the size, hardness, and change of the feel in the trigger.

As of now my SD-E is

2.25lb pull through first stage

stack to 3.25 lbs on 2nd stage

Very slight movement at 2nd stage and stop "3rd stage?" (Very easy to pull through if you get lazy)

an ounce or two more and break

My other Geissele is a SSA-E and it has no "3rd" stage. I like this additional "stage" as it lets me break the shot exactly when I want.

However it may be a uncommon "glitch" with just my trigger. I plan on getting a couple more SD-Es and I'll know for sure.

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12 years 4 months ago #24863 by faawrenchbndr
Replied by faawrenchbndr on topic Anti Rotational Pins...
Sounds familiar...........wonder why? :whistle:

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12 years 4 months ago #24865 by SOC
Replied by SOC on topic Anti Rotational Pins...

faawrenchbndr wrote: Sounds familiar...........wonder why? :whistle:

Just passing on what they sent to me.

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12 years 4 months ago #24886 by Lizardette
Replied by Lizardette on topic Anti Rotational Pins...
I don't know if they sell them separately, but I'm using the very slightly oversized hammer and trigger pins that came with the RRA two stage triggers (have them in two different rifles). Over a thousand rounds later, they don't look to have moved left/right or rotated at all.

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12 years 4 months ago #24890 by faawrenchbndr
Replied by faawrenchbndr on topic Anti Rotational Pins...
To check and see if your pins are rotating, cycle the charging handle and observe the hammer pin when the trigger is pulled. does it rotate? Many will move about thirty degrees when the hammer drops.
The following user(s) said Thank You: Lizardette

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12 years 4 months ago #24896 by faawrenchbndr
Replied by faawrenchbndr on topic Anti Rotational Pins...

SOC wrote:

faawrenchbndr wrote: Sounds familiar...........wonder why? :whistle:

Just passing on what they sent to me.



Did not intend to sound like a smart azz. Seems GA has a canned response to this question, exactly the same reply I got about six months ago.

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