sterling 9mm, "WARNING"

[kiki]

Toke my new WLA sterling to range today, fired 250 rounds winchester WB...no problem!
The minute i started shooting sellier & bellet 9mm ball....50 rounds later my firing pin breaks!!!!...

Looks like s&b 9mm is know for having hard primers!!!!! Dont shoot s&b in your semi auto sterling!!!! I got lucky the shop i bought my sterling swamp me a firing pin from another gun!!! :0)

[kiki]

Pic

[gpr]

i guess it would be a good idea to keep a spare...i hope the WLA and the colefire are the same...gary

[Traveler]

Give WLA a call. I bet they will replace it.

[kiki]

Called century and wise lite...on firing pin issue...century reffered me to wise lite..wiselite says....there out of firing pins till next month....im gonna try to buy one or two spares, depending on price?

[BeltFedEd]

I hate to have to say it, but I don't think S&B primers are your problem. That is unless they started using granite for their primers.

[kiki]

well, theres alot of talk online about sellier and bellot having hard primers!!! its funny that winchester wb, 250 rounds no problem, i shoot about 35-45 rounds of sb 115 grn, and pin broke!!! ill find out when i shot her again, with wb...well see!!!!!

[BeltFedEd]

You're pulling my leg, right? A thin copper or brass cup broke a steel firing pin?


A thread from right here on UZI Talk in this forum.

Need a Wiselite Sterling Sporter firing pin


J&G Sales review.

http://www.jgsales.com/product_revie...ws_id/4754?SID

http://www.jgsales.com/product_revie...eviews_id/3669


They mention possible brittle firing pins in this thread.

http://www.ar15.com/lite/topic.html?b=6&f=48&t=320619


From TheHighRoad.org

Almost at the bottom look for a post from ziggymolly

http://www.thehighroad.org/archive/i.../t-404562.html


From Calguns.net

Post #56 broken firing pin

Sterling 9mm carbine!



The search feature and Google are your friends.

[kiki]

Your right beltfeed!!! (Bad design) Well speaking for my self, my pin broke while firing gun. Im assuming my pin was too brittle and couldnt handle the slamming/hitting force of firing...look at pic above, just broke off, no bending at all!!!! I saw other people having same problem, but i didnt realize so many!!!
Since im not the only one, having issues with this it must be a design flaw...wonder what type of metal there using?? Definately too weak!!!k

[kiki]

But looking to modify other pins out there, example..not sure on deminsions....ar15 firing pin...reducing rear end, drilling hole for sear engagement and shorting pin size..just ideas??? Look at issues w/ sterlings!!!!

[BeltFedEd]

It may have been the type of metal or as some have suggested improper heat treatment.

I'm not a metallurgist but I have experienced bad heat treatment. Many years ago I was making up removable pins out of 1/2" cold rolled stock. I heated, bent and then quenched them in water. Bad move. I accidently bumped one off of the bench and it broke in two when it hit the floor. Too brittle.

[Vegas SMG]

You're pulling my leg, right? A thin copper or brass cup broke a steel firing pin?

Exactly!
When most folks use the term "hard primer" they don't mean to infer that the primer or primer material is actually hard.

I think you'll find this link interesting reading.
http://www.rnettles.com/Primers.pdf

__________________
"The cynic knows the price of everything and the value of nothing."
-Oscar Wilde

[BeltFedEd]

Exactly!

I keep forgetting that sarcasm doesn't always translate on the internet. I know there's no way in hell a soft little primer is going to break a firing pin.





.

[MuzzleFlash]

IMO, only the tip of the pin should be hardened slightly to prevent wear. The rest of the pin should be left softer to take the beating.

[Vector 9mm]

I have one of the Wise-Lite carbines, and I am on my 4th firing pin. I called them up about it when iy first broke, and they sent me new ones. After the second one broke, they made me a new bolt, l have still had issues. l'm wodering if it might be from "dry firing"???? Some guns can take that, others can't.

My 2 cents worth.....

[kiki]

Imo....dry firing shouldnt hurt the firing pin...everytime your mag runs dry it will fall on a empty chamber... not to mention the back stop of pin stops pin from going all the way forward...front of pin only hits primer!!!!..my pin broke/ snapped in half...very brittle...no bending at all...the need to make the firing pins out of better quality steel....my uzi has so far over 1000 rounds and alot of dry firing (for being 3 months old) and no problems with pin at all, not even the bluing on pin is wearing! Am about to sell my sterling if i cant find someone to make me a solid firing pin.......my 3 cents.....