calegalish

i saw this while browsing the forums.

upon further inspection, i noticed the chip where the bolt cam pin goes in the bolt. This looks like it would have resulted from the bolt closing with too much force resulting in the chip. Also, this picture shows the wear marks that survivalshop was pointing out. The back left of the lugs are worn at an angle which suggest the bolt was not completely unlocked when the rifle was cycling and probably with too much force. Interesting side note, I used a WML to light up the bolt when I took the picture hence the lines.

Cool, let me know.

Hey Survivalshop, I get your point that this could have been an issue that kept building upon itself with the other issues. I have just never seen this type of crack before and neither has the guy who made and tested the new upper assembly or Clint at heavy buffers. I am not blaming SOW for a bad part just saying that if you have one to keep an eye out just in case. Did you ever figure out why your rifle would function properly with pmags? I am guessing the slide not catching on an empty mag? Anyone use the JP enhanced bolt with a short gas system? I have one of their low mass BCG in a 22" rifle and functions flawlessly.

Hey Sketch, yup, i lubed her up good with the little white bottle that the BCG shipped with and later with EWL prior to and during the range. I ran this bolt on 4 separate range days and cleaned every time. Its a pretty good crack so I think I would have caught it when it first happened but can't say for sure.

Ok the term makes sense now. Definitely didn't do that. Thanks for the lesson.

i am running a carbine length buffer tube which I feel was the start of all the issues.

not sure what you mean by "mortaring".

I would say too soon. Its not related to to the chamber issues. I thought it was at first but I sent the entire upper with buffer, tube, stock, BCG etc to Dwayne at Dez Arms. He admitted that the chamber was flawed and should not have been shipped in that condition. He polished the chamber and assembled the upper and got it all dialed in. We continued to discuss cycling issues that occur when running a 16" barrel with carbine gas system on the 308 platform. He was doing a custom run of 16" barrels with mid length gas systems so i had him make me one also. I also installed a heavy buffer to slow down the cycling. Will do. Thanks for letting me know.

I purchased a .308/7.62x51 bolt carrier group (NiBoron) from Shadow Ops Weaponry in Nov 2013. Finally got the BCG in late Jan 2014 and built the rifle but was having some cycling issues extracting consistently. After dealing with a chamber issue on a Dez arms barrel (Dwayne is great to work with), we got the rifle to the range, adjusted the gas block and sighted in. Everything was working great until I got home and started cleaning and noticed a large crack on the bolt. I have less than 100 rounds on this BCG. So just a heads up for those with this BCG to keep an eye out. I have contacted Shadow Ops and never heard anything back. From other posts, it sounds like they have closed their doors.

Yah my bad, return to zero. :-[

Very nice build shoofley. Love to hear how the Bobro mount works for ya. Are you going to test its RTO?

So finally picked a upper vice block up and can't wait for my barrel kit to arrive. SO eager in fact that, that I put the block in my upper and found it nearly impossible to get it out. Any tips here? Fine layer of gun grease/oil to aid in removal or will the barrel provide enough leverage to easliy remove after assembly?

I happened to be in the area so I stopped by Phase 5 today and got to look around. Nice group of guys over there who were very helpful. They manufacture two versions of their BAD lever, one for 5.56 and .308. Kyle informed me that the actual bolt catch portion are different sizes for the 5.56 and .308. You can use the 5.56 in a .308 but not recommended. Hope this helps. Cal

we all have them, just in different forms. ;)