Get-n-Ready 8 Posted August 22, 2013 Report Share Posted August 22, 2013 Bolt replaced-shipped back out today. Quote Link to post Share on other sites
rapidrpr 3 Posted August 22, 2013 Report Share Posted August 22, 2013 I HAVE TWO MKA1919. ONE XN THE OTHER NON XN. BOTH HAVE CRACKED BOLTS. THE AREA THERE IS TOO THIN NOT TO CRACK UNDER STRESS.FOR ME IT NOT A PROBLEM. TOO MUCH DRAMA!! Quote Link to post Share on other sites
Get-n-Ready 8 Posted August 22, 2013 Report Share Posted August 22, 2013 I HAVE TWO MKA1919. ONE XN THE OTHER NON XN. BOTH HAVE CRACKED BOLTS. THE AREA THERE IS TOO THIN NOT TO CRACK UNDER STRESS.FOR ME IT NOT A PROBLEM. TOO MUCH DRAMA!!Isaid the same too thin-I was more worried about the barrel.But im looking for the bolt to crack again. Quote Link to post Share on other sites
Anubis 38 Posted August 22, 2013 Report Share Posted August 22, 2013 several variants of that bolt have a slot cut through that area , its just not an issue Quote Link to post Share on other sites
Get-n-Ready 8 Posted August 22, 2013 Report Share Posted August 22, 2013 several variants of that bolt have a slot cut through that area , its just not an issueOk I trust what you say Anubis,i wont worry about bolt cracks!! Quote Link to post Share on other sites
Anubis 38 Posted August 22, 2013 Report Share Posted August 22, 2013 In very few cases that crack can propagate downwards from the bottom of the hole rather than the top. That is an issue that requires replacing the bolt. Before I replaced my bolt in my personal gun it had roughly 11,000 rounds through it. I had a cracked bolt just like yours from day one, and it never caused an issue. But we've redesigned the bolt and machined it from tool steel, at the moment though it is unfortunately not available for purchase. Quote Link to post Share on other sites
Joe**Dirt 21 Posted August 22, 2013 Report Share Posted August 22, 2013 In very few cases that crack can propagate downwards from the bottom of the hole rather than the top. That is an issue that requires replacing the bolt. Before I replaced my bolt in my personal gun it had roughly 11,000 rounds through it. I had a cracked bolt just like yours from day one, and it never caused an issue. But we've redesigned the bolt and machined it from tool steel, at the moment though it is unfortunately not available for purchase. I'm in line for one. Quote Link to post Share on other sites
Get-n-Ready 8 Posted August 22, 2013 Report Share Posted August 22, 2013 In very few cases that crack can propagate downwards from the bottom of the hole rather than the top. That is an issue that requires replacing the bolt. Before I replaced my bolt in my personal gun it had roughly 11,000 rounds through it. I had a cracked bolt just like yours from day one, and it never caused an issue. But we've redesigned the bolt and machined it from tool steel, at the moment though it is unfortunately not available for purchase.Just post em when ya got em-Im in. 1 Quote Link to post Share on other sites
yamadog35 28 Posted August 23, 2013 Report Share Posted August 23, 2013 Just got my gun a couple of days ago. Stripped it down this evening. Gun is unfired by me. Bolt has the same crack noted here. Based on discussion here, I'm not worrying about it. Sorry for crappy phone pic . . . Quote Link to post Share on other sites
yamadog35 28 Posted September 12, 2013 Report Share Posted September 12, 2013 Posting again after 160 rounds. The bolt now looks like this. I'm now going to do what I had considered doing when there was just a crack. I'm going to smooth and round out the corners and edges. Originally I was going to remove some of the material where the crack was in the above photo. Obviously I don't need to that now - just smooth it out. Showing a different angle so you can see the gap with the white background . . . Quote Link to post Share on other sites
Get-n-Ready 8 Posted September 12, 2013 Report Share Posted September 12, 2013 I still see a crack on mine(I haven't shot it since it was returned).If they did replace it-it cracked again when they test fired it. Quote Link to post Share on other sites
Goodwin 1 Posted November 9, 2013 Report Share Posted November 9, 2013 Any one had there bolt crak below the pivot point is it structural or not? or am i s.o.l and it is time to get a placement the crak is very visable Quote Link to post Share on other sites
ekamper 0 Posted November 9, 2014 Report Share Posted November 9, 2014 I have the same issue but worse. I have a 2mm gap in mine as well as the breech lock brok in 2 pieces. I need a complete bolt assembly. Any ideas where I can find that? Raac went out of business or all contact info for Raac doesn't exist anymore. Quote Link to post Share on other sites
ekamper 0 Posted November 9, 2014 Report Share Posted November 9, 2014 I have the same issue but worse. I have a 2mm gap in mine as well as the breech lock brok in 2 pieces. I need a complete bolt assembly. Any ideas where I can find that? Raac went out of business or all contact info for Raac doesn't exist anymore. Quote Link to post Share on other sites
james lambert 3,059 Posted November 9, 2014 Report Share Posted November 9, 2014 3" shells or hot 2 3/4" will break bolts period. light recoil springs can cause the same thing Many bolts have the crack at the top of the pivot hole, some new ones have it It does coincide with a sharp corner (stress Riser) and can propagate. The wall thickness in the XN bolt is thinner in this area and more prone to break than the pre XN we can make bolts but small numbers make them too expensive at this time Quote Link to post Share on other sites
SHOTGUN MESIAH 855 Posted November 9, 2014 Report Share Posted November 9, 2014 we can make bolts but small numbers make them too expensive at this time Then do a large run. You know everybody that owns a MKA will buy one. I think it would be a big seller for you. Quote Link to post Share on other sites
ekamper 0 Posted November 9, 2014 Report Share Posted November 9, 2014 we can make bolts but small numbers make them too expensive at this time Would just be easier cheaper to buy another XN just for parts only? Quote Link to post Share on other sites
james lambert 3,059 Posted November 9, 2014 Report Share Posted November 9, 2014 we can make bolts but small numbers make them too expensive at this time Would just be easier cheaper to buy another XN just for parts only? no but our billet machined bolt would be $200.00 in small run numbers it needs to be half that with a little profit for my work to be a viable product Its has to use our lock as well, and also uses our extractor (part of why so spendy) Quote Link to post Share on other sites
Flatland Shooter 22 Posted November 10, 2014 Report Share Posted November 10, 2014 we can make bolts but small numbers make them too expensive at this time Would just be easier cheaper to buy another XN just for parts only? no but our billet machined bolt would be $200.00 in small run numbers it needs to be half that with a little profit for my work to be a viable product Its has to use our lock as well, and also uses our extractor (part of why so spendy) If the billet machined bolt would solve the problem once and for all, then it would be a big seller. So in time, do you think you will offer these? From what I've read so far it seems like the bolt and drive block are the weak links. Or is there other parts I need to be concerned about? Thanks. Bill Quote Link to post Share on other sites
james lambert 3,059 Posted November 10, 2014 Report Share Posted November 10, 2014 the XN drive block breaks a lot but we have heavy duty replacements in stock yes we will have the bolt at some point Quote Link to post Share on other sites
Flatland Shooter 22 Posted November 10, 2014 Report Share Posted November 10, 2014 the XN drive block breaks a lot but we have heavy duty replacements in stock yes we will have the bolt at some point Also pre-XN parts for some of us early birds? Quote Link to post Share on other sites
james lambert 3,059 Posted November 10, 2014 Report Share Posted November 10, 2014 I have a few pre XN bolts and carriers Quote Link to post Share on other sites
Flatland Shooter 22 Posted November 10, 2014 Report Share Posted November 10, 2014 I have a few pre XN bolts and carriers That is good news. I mentioned on another thread that my only concern for the MKA 1919 is parts availability. As a competitive shooter, my shotgun will see more rounds through it in a month than most sporting shotguns see in a lifetime. Everyone that I've loaned my gun to has liked it. The base price to get started is not bad. Its not a complicated gun to work on and with the current batch of accessories available, it has all the potential needed to be the best competition shotgun out there. A lot of competition shooters do not hesitate to plunk down thousands of dollars for a new gun. But no reasonable person will spend even half that for a gun that once broken will stay broken. On the USPSA side of things, I'm sure there are handguns out there that would be great for the sport but availability of replacement parts has doomed them to be the occassional oddity at the range. I've been lucky. My MKA 1919 runs flawlessly and I've had no major broken parts. But I'm no fool (though some will argue that point) and I know that in time my gun will break. For insurance, I have a spare stock gun in the safe to be used solely for parts. Not all are willing to part with that amount of money on the fear that they will not be able to repair a match gun without it. I have four friends that will be joining me at a local 3 gun match in a few weeks. For three of them, all long time USPSA shooters, it will be their first 3 gun match. All will be using my shotgun. If they love the sport and decide to go all out with new gear, can I recommend the MKA 1919? And if I do, must I use the caveat that its great now but you may have trouble findiing parts in the future? The success of the MKA 1919 and its variants will not be in the hands of the competitors. We have tried it and we like it. It will be on the hands of folks like Jim and Matt and anyone else that is willing to step into the marketplace with the parts to improve these guns and help keep them running. So to Firebird Precision and Tooth and Nail, thank you. Bill Quote Link to post Share on other sites
SHOTGUN MESIAH 855 Posted November 10, 2014 Report Share Posted November 10, 2014 If Jim would spend more time in the shop instead of on here we would already have our bolt….. Quote Link to post Share on other sites
ekamper 0 Posted November 11, 2014 Report Share Posted November 11, 2014 (edited) we can make bolts but small numbers make them too expensive at this time Would just be easier cheaper to buy another XN just for parts only? no but our billet machined bolt would be $200.00 in small run numbers it needs to be half that with a little profit for my work to be a viable product Its has to use our lock as well, and also uses our extractor (part of why so spendy) $200 dollars sounds ok for me? BUT I also need the Locking Block. I have already spent hundreds on top of original price. I would hate to piss that away and have a dead gun. Ive contacted an old supplier, Centerfire, Bill is working hard for me and Im willing to Buy 3 Bolts or Locking Blocks (what ever he can get), New or used at any cost just so this gun doesn't end up never fired again. I love this gun. When I take my son in laws out they always reach for this gun first, then the 44's. Edited November 11, 2014 by ekamper Quote Link to post Share on other sites
rlillyskygod@yahoo.com 2 Posted November 11, 2014 Report Share Posted November 11, 2014 (edited) Ditto 200.00 is no problem. I would place my order today to have a backup. Edited November 11, 2014 by rlillyskygod Quote Link to post Share on other sites
Flatland Shooter 22 Posted November 11, 2014 Report Share Posted November 11, 2014 That $200 price tag sounds high for just a replacement bolt, BUT, if it is an improved version that solves the problem once an for all it will be worth it. Bill Quote Link to post Share on other sites
james lambert 3,059 Posted November 11, 2014 Report Share Posted November 11, 2014 That $200 price tag sounds high for just a replacement bolt, BUT, if it is an improved version that solves the problem once an for all it will be worth it. Bill bolt, bolt lock , firing pin retaining pin, extractor, extractor spring, extractor detent pin Six parts Quote Link to post Share on other sites
Flatland Shooter 22 Posted November 11, 2014 Report Share Posted November 11, 2014 That $200 price tag sounds high for just a replacement bolt, BUT, if it is an improved version that solves the problem once an for all it will be worth it. Bill bolt, bolt lock , firing pin retaining pin, extractor, extractor spring, extractor detent pin Six parts For pre-XN guns, do you keep most of these parts in stock? Are they NOS or are they better than stock parts manufactured by you or someone else? Time to compile a shopping list. Thanks. Bill Quote Link to post Share on other sites
deathray 4 Posted November 14, 2014 Report Share Posted November 14, 2014 Jim, I would also gladly throw $200 at you for a new bolt and possibly even $400 so I can have a spare in the pack for trooper class. Quote Link to post Share on other sites
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