[GunsNweights87]

Which would you choose rifle is a 16 inch middy cost is about 80 for 9310 and 85 for the c158 I will be running this rifle hard and will be my primary defense rifle


Sent from my iPhone using Glock Talk

 

[Bren]

I looked at a couple of PSA kits recently and the only difference was that one had a 9310 bolt and one had a C158. I doubt it makes any difference, but the C158 is the mil spec, so it has been tried and tested a lot more for a lot longer, so I went with that.

 

[Jack Black]

I'd pick the brand with the reputation for higher quality.

 

[0311INF]

Doesn't really matter unless you are putting 20k rounds through it.

 

[BC42]

C158 was spec'd in the 50's (60's?). Metallurgy has come a long way since and 9310 is a better metal for a bolt. I have both types of bolts and both work great. Get the cheaper one or the one with the rollmark that makes you feel warm and fuzzy.

 

[fnfalman]

C158 was spec'd in the 50's (60's?). Metallurgy has come a long way since and 9310 is a better metal for a bolt. I have both types of bolts and both work great. Get the cheaper one or the one with the rollmark that makes you feel warm and fuzzy.

The whole gun was engineered in the 1950s...

 

[Quijibo]

I just bought another Toolcraft BCG, good stuff. I've had a few nitrided BCG's and while I've not had issues, I know others who have. I bought a good old phosphate this time, very well made BCG.
I bought it here (before they were out):
https://www.wcarmory.com/toolcraft-...nc/toolcraft-223-5-56-bcg-phosphate-chrome-1b1b6-carrier-with-c158-mpi-bolt.htm

 

[Big Bird]

They make M60 MG bolts, M240 MG Bolts and AR10 bolts out of 9310 so that should tell you something....

 

[H@zmatt]

I’ve got Toolcrafts bcg with both. I haven’t noticed a difference.

 

[fnfalman]

They make M60 MG bolts, M240 MG Bolts and AR10 bolts out of 9310 so that should tell you something....

That bigger boom needs different steel than poodle shooter?

 

[246203]

They make M60 MG bolts, M240 MG Bolts and AR10 bolts out of 9310 so that should tell you something....

That would make 9310 MilSpec.

 

[Big Bird]

That bigger boom needs different steel than poodle shooter?

Yeah...but I think the SAW also uses 9310 in its bolts...

I'm a big fan of Young Manufacturing BCGs but they don't stake their carrier key screws and that makes the milspec crowd wet their pants...

 

[dla]

I will be running this rifle hard and will be my primary defense rifle

HAhahahahahaHAHAHASNORK!!!
You mall ninjas are seriously funny.

 

[GunsNweights87]

HAhahahahahaHAHAHASNORK!!!
You mall ninjas are seriously funny.

Hahahahaaa you trolls are hilarious


Sent from my iPhone using Glock Talk

 

[dkf]

Doesn't matter. The C158 costs more because Carpenter charges more for the C158 stock. You should have a spare bolt on hand regardless.

 

[Mayhem like Me]

Yeah...but I think the SAW also uses 9310 in its bolts...

I'm a big fan of Young Manufacturing BCGs but they don't stake their carrier key screws and that makes the milspec crowd wet their pants...

Yes indeed I use them on all my builds with the hard chrome . Tough as nails . Also 9310 is great and excellent for bolts now with modern heat treat protocols it was not as good as c158 10 years ago if you screw the heat treat on 9310 its too brittle Get it right it about the. Best stuff going for strength an even shock resistance

 

[Mayhem like Me]

That would make 9310 MilSpec.

For those bolts yes.

 

[cciman]

You will have to spend alot $$ in ammo cost to wear either 9310 or c158, so that should not be your criteria.

 

[DaleGribble]

You will have to spend alot $$ in ammo cost to wear either 9310 or c158, so that should not be your criteria.

This is the conclusion I've come to as well.

I used to care about this but having used a Stag Arms 9310 BCG for well over 10,000 rounds since 2008, with absolutely no issue other than rings, I could care less anymore.

 

[fnfalman]

You will have to spend alot $$ in ammo cost to wear either 9310 or c158, so that should not be your criteria.

Thank you for the voice of reason. Also consider the cost difference between these two bolts are minimal at best...