JasonRBenjamin Posted September 15, 2013 Share Posted September 15, 2013 (edited) I recently picked up a EAA Witness Match in 9MM with a henning trigger & grips off of Gun Broker. I am getting Failure to fire. The strikes on the Primers are so light that I had not had a round go off yet. Brought it homes and disassembled it. Nothing looks out of place with the firing pin. The Firing pin measures 2.586in long. The previous owner believe it is still the stock hammer spring and has 3k rounds through it. Never had any problem shooting his reloads using CCI primers. Thoughts? Edited September 16, 2013 by JasonRBenjamin Link to comment Share on other sites More sharing options...
Big Dog Howie Posted September 15, 2013 Share Posted September 15, 2013 14 or 15 lb main hammer spring unless you have an extended firing pin than I think a 13 will do.if it has had work done previously than it probably has a lighter hammer spring.we installed a 13 in my stock II and I had light hits so going back to a 14 I would rather have reliability than a little lighter trigger which I can't tell in thee middle of a stage anyway Link to comment Share on other sites More sharing options...
Cy Soto Posted September 15, 2013 Share Posted September 15, 2013 Have you cleaned the firing pin channel yet? Link to comment Share on other sites More sharing options...
Big Dog Howie Posted September 15, 2013 Share Posted September 15, 2013 Have you cleaned the firing pin channel yet?Good point Link to comment Share on other sites More sharing options...
pharoh Posted September 15, 2013 Share Posted September 15, 2013 Also make sure the firing pin block is nice and clean so it moves freely in the slide (if u run with one) Link to comment Share on other sites More sharing options...
kneelingatlas Posted September 15, 2013 Share Posted September 15, 2013 If everything is polished nicely the hammer spring only effects SA pull to a small degree so I like to use a 20# spring for a quick SNAP! Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 16, 2013 Author Share Posted September 16, 2013 Polished up the firing pin and the Block this afternoon. Cleaned the firing pin channel, and for good measure I ordered a 18lb firing pin spring. Does anyone have a wire diameter on the stock 16 spring? or any of the lighter ones? Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 26, 2013 Author Share Posted September 26, 2013 New Wolf Hammer Spring 18lbs, Recoil Spring 7lbs which includes a Firing pin spring. ~30% of Pmc & Fed Fire, 0% of Win White Box. Remove the Firing Pin Block no issues...... Thoughts???? Link to comment Share on other sites More sharing options...
Intercooler2 Posted September 26, 2013 Share Posted September 26, 2013 Have you measured anything? Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 26, 2013 Author Share Posted September 26, 2013 The Firing pin measures 2.586in long. Is there anything else that I should be measuring? Ammo is store bought. Link to comment Share on other sites More sharing options...
praetorian97 Posted September 26, 2013 Share Posted September 26, 2013 If the previous owner thinks its a stock hammer spring but isn't sure, I would just buy a stock one from Wolff Gun Springs. There's no reason the stock weight should not work. Going up in weight seems to be the opposite direction most do. Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 26, 2013 Author Share Posted September 26, 2013 New Wolf Hammer Spring 18lbs, Recoil Spring 7lbs which includes a Firing pin spring. Link to comment Share on other sites More sharing options...
praetorian97 Posted September 26, 2013 Share Posted September 26, 2013 K. My post should say "Would Have" bought the stock rating hammer spring to insure you are at least at that. Going heavier than stock seems to be duct taping the real issue you are trying to track down. Can someone mic a stock and henning firing pin? Link to comment Share on other sites More sharing options...
kneelingatlas Posted September 26, 2013 Share Posted September 26, 2013 Henning's large frame pin is 2.630" Link to comment Share on other sites More sharing options...
praetorian97 Posted September 26, 2013 Share Posted September 26, 2013 Has the potential for a worn out firing pin been addressed? Link to comment Share on other sites More sharing options...
Nealio Posted September 26, 2013 Share Posted September 26, 2013 Also I've seen some pistols where the firing pin block does NOT disengage fully. I had to take my dremel and shorten the lug on it because it was physically enable to get completely out of the way. This was causing a similar issue. On another note I did some work on a polymer gun recently. I polished the firing pin, polished the inside of the firing pin block, and lowered that lug I mentioned about .010 and now the primer strikes are crazy deep. Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 27, 2013 Author Share Posted September 27, 2013 (edited) Henning's large frame pin is 2.630" >>> kneelingatlas is that a stock large frame firing pin? not a Henning or EGW? Since mine is 2.586in, where do I buy a replacement firing pin? EAA? Does anyone have a spare? or EGW? Where can a EGW firing pin be purchased from? Edited September 27, 2013 by JasonRBenjamin Link to comment Share on other sites More sharing options...
kneelingatlas Posted September 27, 2013 Share Posted September 27, 2013 (edited) I took that measurement from Henning's site for his extra long FP, but it cannot be used with the FP block. If your setup works great without the FPB, either leave it out or work on fixing it with Nealio's suggestions. I'm not a big fan of the blocks, so I take them out; after all, these are race guns, not carry pistols Edited September 27, 2013 by kneelingatlas Link to comment Share on other sites More sharing options...
kneelingatlas Posted September 27, 2013 Share Posted September 27, 2013 I just re read your OP and it occurs to me that with the Henning trigger set up right the sear may not travel enough to consistently release the FPB. I'll bet the seller or your pistol wasn't using the block, then through it in before he sold it in an attempt to limit his liability if the buyer were to have am accident. Is the hammer stock or aftermarket? The firing pin block safety is designed to work with the crap triggers these pistols roll out of the factory with, complete with long pre/over travel. Link to comment Share on other sites More sharing options...
praetorian97 Posted September 27, 2013 Share Posted September 27, 2013 Has the Tang been tested without the Firing Pin block installed? Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 27, 2013 Author Share Posted September 27, 2013 Has the Tang been tested without the Firing Pin block installed? praetorian97 > Thank you for the idea, but Please make sure to read all the prior post as your questions have been answered each time in prior postings. Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 27, 2013 Author Share Posted September 27, 2013 (edited) Also I've seen some pistols where the firing pin block does NOT disengage fully. I had to take my dremel and shorten the lug on it because it was physically enable to get completely out of the way. This was causing a similar issue. On another note I did some work on a polymer gun recently. I polished the firing pin, polished the inside of the firing pin block, and lowered that lug I mentioned about .010 and now the primer strikes are crazy deep. I just re read your OP and it occurs to me that with the Henning trigger set up right the sear may not travel enough to consistently release the FPB. I'll bet the seller or your pistol wasn't using the block, then through it in before he sold it in an attempt to limit his liability if the buyer were to have am accident.Is the hammer stock or aftermarket?The firing pin block safety is designed to work with the crap triggers these pistols roll out of the factory with, complete with long pre/over travel. I think we have a winner, thank you both Nealio & kneelingatlas There was no discernable mark with the stock hammer spring, but now with the 18lb hammer spring it is leaving a mark on the firing pin. Where the Firing Safety Block is not disengaging. Sorry for the poor Picture. Edited September 27, 2013 by JasonRBenjamin Link to comment Share on other sites More sharing options...
praetorian97 Posted September 27, 2013 Share Posted September 27, 2013 Has the Tang been tested without the Firing Pin block installed? praetorian97 > Thank you for the idea, but Please make sure to read all the prior post as your questions have been answered each time in prior postings. I will just keep my mouth shut next time big guy. Im posting from a phone most times and believe it or not I do look up briefly. Link to comment Share on other sites More sharing options...
JasonRBenjamin Posted September 27, 2013 Author Share Posted September 27, 2013 Has the Tang been tested without the Firing Pin block installed? praetorian97 > Thank you for the idea, but Please make sure to read all the prior post as your questions have been answered each time in prior postings. I will just keep my mouth shut next time big guy. Im posting from a phone most times and believe it or not I do look up briefly. praetorian97> Don't get me wrong, the input is appreciated and I mean you no offense. Link to comment Share on other sites More sharing options...
Nealio Posted September 28, 2013 Share Posted September 28, 2013 Boom, glad you got it fixed Link to comment Share on other sites More sharing options...
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