Vlad Posted March 18, 2010 Share Posted March 18, 2010 My AR currently is sporting a set of the Tubb 90% springs which feel nice to me. I've put maybe 600 .223 rounds through it, and about 1200 .22 rounds through a CMMG conversion kit. Today the hammer spring snapped in 2 (one of the side coils broke away from the U shaped bend). Do people break those springs? Are the Tubb springs crap or did I get one poorly heat treated? Do .22 conversions put different stress on hammers? Link to comment Share on other sites More sharing options...
DrawandDuck Posted March 19, 2010 Share Posted March 19, 2010 (edited) Kinda like this?? Found this last month, don't know how long it had been broken....it is a JP that is 4 yrs old...probably 20-25k rounds...maybe yours was just a bad spring... Edited March 19, 2010 by DrawandDuck Link to comment Share on other sites More sharing options...
HRider Posted March 19, 2010 Share Posted March 19, 2010 I have not broken a hammer spring yet, but mine don't have but around 10k on the most used one. I use JP yellow springs. Hurley Link to comment Share on other sites More sharing options...
Vlad Posted March 19, 2010 Author Share Posted March 19, 2010 Yup it broke almost like that but closer to the U, there is none of the first loop attached to it. With that few rounds I sure hope it was just bad metal, the break is a very clean shear. I do have set of the JP yellows thats going to go into the gun for now, but they don't light up everything (like military primers) so I'll have to shop around for some springs that feel nice and light up everything. Link to comment Share on other sites More sharing options...
DrawandDuck Posted March 19, 2010 Share Posted March 19, 2010 I have not broken a hammer spring yet, but mine don't have but around 10k on the most used one. I use JP yellow springs. Hurley That one USED to be yellow many many moons ago..... Link to comment Share on other sites More sharing options...
EkuJustice Posted March 19, 2010 Share Posted March 19, 2010 Do you have a stock hammer or a "speed hammer" If you have a stock hammer, you can replace it with a speed hammer or cut the hook off the stock one. this can be viewed on bill springfields site Link to comment Share on other sites More sharing options...
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