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Posted: 1/29/2006 8:35:20 PM EDT
Seems like a "great leap forward" to me. Opinions, reports, etc...

TIA,

TS
Link Posted: 1/30/2006 4:31:09 AM EDT
the perma pin?


what was used in the past until the wire cotter pin replaced it which you see used today.
Link Posted: 1/30/2006 8:54:43 AM EDT
the older retaining pin you mean?
Link Posted: 1/30/2006 3:04:35 PM EDT
From what I'm told it is similar to the early or original pin. Better or worse than the cotter pin?

TS
Link Posted: 1/30/2006 6:43:20 PM EDT
[Last Edit: 1/30/2006 6:43:52 PM EDT by Duffy]
Cheaper cotter pins do as well a job as the more expensive original. I've heard people's new solid pins snap, maybe they'll chime in. It's a leap backward really, what would they think of next, the original slip ring, triangle shaped charging handle, brittle furniture?
Link Posted: 1/31/2006 2:07:53 PM EDT
It's strictly for us nuts who want to build up lookalike pieces of the early types---so I bought one of the DPMS versions for my early Air Force M16 clone; to use on the original Colt chromed smoothside carrier.

Otherwise, stick w/the cotter pin.
Link Posted: 1/31/2006 4:50:13 PM EDT
Is this the "old way" firing pins were retained? Is this improved? Is there really a need for this? No flames, I am just puzzled.
Link Posted: 1/31/2006 5:31:05 PM EDT
Link Posted: 1/31/2006 6:16:56 PM EDT
They look to be made better. Seems like they would be easier to install and remove, that's all ...

TS
Link Posted: 1/31/2006 6:18:29 PM EDT
[Last Edit: 1/31/2006 6:19:15 PM EDT by eklikwhoa]
looks can be deceiving
Link Posted: 1/31/2006 7:45:04 PM EDT
[Last Edit: 1/31/2006 7:45:20 PM EDT by Dace]

Originally Posted By Duffy:
Cheaper cotter pins do as well a job as the more expensive original. I've heard people's new solid pins snap, maybe they'll chime in. It's a leap backward really, what would they think of next, the original slip ring, triangle shaped charging handle, brittle furniture?



When I bought a CMT bolt and carrier I received a free Perma pin with the order.

The thing broke while I was installing it. Maybe I was doing it wrong, but I dont think the thing should break from me just pushing it in with thumb pressure.
Link Posted: 1/31/2006 9:30:22 PM EDT
Ok. Stay with cotter pin. Thanks guys!

TS
Link Posted: 2/1/2006 7:11:22 AM EDT
My cotter type pins have bent over time... My KNS pin is rock solid!
Link Posted: 2/1/2006 7:20:13 AM EDT
If your cotter pin is bending then the AR15 notched hammer is catching the collar of the firing pin as it cycles. It is actually pretty difficult to bend a cotter pin just using thumb pressure (even over time). A shrouded bolt carrier will fix the problem with the hammer catching the firing pin collar.
Link Posted: 2/1/2006 7:30:38 AM EDT

Originally Posted By Bartholomew_Roberts:
If your cotter pin is bending then the AR15 notched hammer is catching the collar of the firing pin as it cycles. It is actually pretty difficult to bend a cotter pin just using thumb pressure (even over time). A shrouded bolt carrier will fix the problem with the hammer catching the firing pin collar.



+1

shrouded firing pin carriers are the way to go.
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