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Posted: 10/1/2015 11:02:17 PM EDT
| A while ago I asked for opinions on a bcg and I am still lost on what to pick there..But anyways alot of people suggested getting the 158 carpenter steel bolt if you want the best .. But I have seen alot of thread lately where hey suggest other cheaper bolts like Surplus Ammo that use 9130 tool bolts instead of the 158 steel .. What the problem with 9130 vs 158 or it just comes down to fan boy's here . |
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The way I understand it is, the heat treat on 9130 is harder to get right. Carpenter 158 is the "mil-spec" but there are plenty of guys here who have stated they've had good luck with 9310 bolts.
FWIW, for how much a quality "mil-spec" BCG costs, I just stick to C158. IMO, you're only looking at saving $50-$60 max going with anything cheaper, why risk it? |
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lol Now if I could only make a decision what BCG to buy ... Quoted:
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Click bait! lol Now if I could only make a decision what BCG to buy ... Picking up a BCG shouldn't be that difficult. They all, for the most part, do the same damn thing. Pick something made out of quality materials, that is manufactured by a quality vendor, and call it a day. Here's one. |
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Picking up a BCG shouldn't be that difficult. They all, for the most part, do the same damn thing. Pick something made out of quality materials, that is manufactured by a quality vendor, and call it a day. Here's one. Quoted:
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Click bait! lol Now if I could only make a decision what BCG to buy ... Picking up a BCG shouldn't be that difficult. They all, for the most part, do the same damn thing. Pick something made out of quality materials, that is manufactured by a quality vendor, and call it a day. Here's one. Oh yeah my price is about $100 max.. My problem is there is so much upgrades for a couple dollars more and what's really worth the extra price .. Look at Aim they have 9130 nitrite bcg for $90 or a 158 nitirte for $99.00 or check surplus ammo and all the options there for about $100 or less using 9130 steel.. They is alot of choices out there .. |
| Also I notice alot of people suggest a BCG and say they have no problem with a low round count .Personal I want to read how the bcg looks at 5k or 10k and post pics ... Cause I go to the range every week and shoot 100+ each time which adds up quick when you think about it . |
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lol Now if I could only make a decision what BCG to buy ... Quoted:
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Click bait! lol Now if I could only make a decision what BCG to buy ... really have you even looked into carrier staking yet  just go mil spec it'll work fine. bolts and carriers are really expensive for what they are but they are what makes everything work & really are the only heat absorbing moving part in the rifle. from what I have read here i'd and do avoidthe chrome and nickle boron coatings.
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While I was in the army I've only seen one bolt fail by sheared locking lugs. I stick to c158 mil spec colt or Fn bolts in my builds and have zero issues with them all. Buy the mil spec. Cut a corner somewhere else on your build. Your bcg, barrel and upper are the things to never cheap out on. My go to rifles carry a spare bolt in the Moe plus grips.
War. |
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Oh yeah my price is about $100 max.. My problem is there is so much upgrades for a couple dollars more and what's really worth the extra price .. Look at Aim they have 9130 nitrite bcg for $90 or a 158 nitirte for $99.00 or check surplus ammo and all the options there for about $100 or less using 9130 steel.. They is alot of choices out there .. Quoted:
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Click bait! lol Now if I could only make a decision what BCG to buy ... Picking up a BCG shouldn't be that difficult. They all, for the most part, do the same damn thing. Pick something made out of quality materials, that is manufactured by a quality vendor, and call it a day. Here's one. Oh yeah my price is about $100 max.. My problem is there is so much upgrades for a couple dollars more and what's really worth the extra price .. Look at Aim they have 9130 nitrite bcg for $90 or a 158 nitirte for $99.00 or check surplus ammo and all the options there for about $100 or less using 9130 steel.. They is alot of choices out there .. Then buy one of those. Quite honestly, they'll probably serve you just fine. Or save up for another month and up your budget. IMO, the BCG is not something you should be skimping out on. This really shouldn't be all that difficult. |
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Iirc, 9130 is softer C158 is "milspec".i would just get a milspec bcg from a reputable vendor NO. 9130 is treated to the same hardness range as Carpenter 158 and in that hardness range, it will achieve the same strength. There are plenty of well regarded manufacturers that make their bolts from 9130. And by the way, "mil-spec" ? "best material available" Many of the "mil-spec" part in an AR are made from plain carbon steel, even some of the relatively important ones... |
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The way I understand it is, the heat treat on 9130 is harder to get right. Carpenter 158 is the "mil-spec" but there are plenty of guys here who have stated they've had good luck with 9310 bolts. FWIW, for how much a quality "mil-spec" BCG costs, I just stick to C158. IMO, you're only looking at saving $50-$60 max going with anything cheaper, why risk it? The heat range in slightly narrower (only 30° narrower), but not "harder to get right". AISI 9310 steel is one of the grades of steel used for gears in car transmissions, as well as shafts, clutch parts, piston pins, chain rollers and bushings and other parts that require very high toughness, very high strength and wear resistance. Given that, there are probably more places in the US and Canada that know how to properly heat treat 9310 properly than Carpenter steel. Carpenter 158 steel is actually classed by Carpenter as a plastic mold steel. |
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