Posted: 3/12/2014 2:11:15 PM EDT
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Can anyone tell me the differences between these four complete BCGs that PSA offers?
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Best suggestion i can give
Add each one to "compare"... .all four of em then click 'compare' and do just that.... you can even print the compare page... check off each feature one by one until you find the differences..... Teach a man to fish and he can feed the world. |
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Can anyone tell me the differences between these four complete BCGs that PSA offers? the first one is their premium ETCHED LOGO bolt carrier group.. Shot peened 158 carpenter mpi hpt chrome lined carrier. the second one is not premium, its not etched, it s bolt is not MPI hpt or shot peened. Although the carrier is chrome lined, and M16 style not civi style. the third one is identical to the first, minus the ETCHED LOGO. (no logo of PSA's on its carrier) the fourth one is the same as the second, with the exception that the bolt is HPT/MPI and is shot peened. this bolts extractor also has an o ring insert. hope that helps and if i missed anything yall feel free to chip in. |
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the first one is their premium ETCHED LOGO bolt carrier group.. Shot peened 158 carpenter mpi hpt chrome lined carrier. the second one is not premium, its not etched, it s bolt is not MPI hpt or shot peened. Although the carrier is chrome lined, and M16 style not civi style. the third one is identical to the first, minus the ETCHED LOGO. (no logo of PSA's on its carrier) the fourth one is the same as the second, with the exception that the bolt is HPT/MPI and is shot peened. this bolts extractor also has an o ring insert. hope that helps and if i missed anything yall feel free to chip in. Quoted:
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Can anyone tell me the differences between these four complete BCGs that PSA offers? the first one is their premium ETCHED LOGO bolt carrier group.. Shot peened 158 carpenter mpi hpt chrome lined carrier. the second one is not premium, its not etched, it s bolt is not MPI hpt or shot peened. Although the carrier is chrome lined, and M16 style not civi style. the third one is identical to the first, minus the ETCHED LOGO. (no logo of PSA's on its carrier) the fourth one is the same as the second, with the exception that the bolt is HPT/MPI and is shot peened. this bolts extractor also has an o ring insert. hope that helps and if i missed anything yall feel free to chip in. Thanks for the input everyone. I did put all four BCGs in the compare feature and found that the 1st, 3rd and 4th BCGs have identical "short descriptions", as in: - Milspec Carpenter No. 158® steel bolt - Shot Peened Bolt - High pressure tested (HPT) - Mag particle inspected (MPI) - Chrome Lined Carrier (AUTO) - Chrome Lined Gas Key - Gas Key Hardened to USGI Specifications - Gas Key Grade 8 Hardened Fasteners - Gas Key Staked Per Mil-Spec - Tool Steel Extractor - Extractor Spring - Extractor O-ring Insert So I was curious what makes the 1st and 3rd BCGs "Premium"? |
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1 & 3 - Bolt Marked MPI/HPT - one with logo 4 - Bolt marked MP 2 - Bolt Marked M Great, thanks for the reply. To clarify, The MPI/HPT mark is for Mag Particle Inspected and High Pressure Tested, correct? The MP mark is for Mag Particle Inspected and High Pressure Tested, correct? The M mark is for Mag Particle Inspected only, correct? |
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Great, thanks for the reply. To clarify, The MPI/HPT mark is for Mag Particle Inspected and High Pressure Tested, correct? The MP mark is for Mag Particle Inspected and High Pressure Tested, correct? The M mark is for Mag Particle Inspected only, correct? Yes, I believe this is correct. |
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1 & 3 - Bolt Marked MPI/HPT - one with logo 4 - Bolt marked MP 2 - Bolt Marked M That's a long ways from a complete and thorough answer however. I figured #3 and #4 were the same unit, both have a regular price of $149.99 anyway, so I thought the 4th SKU was generated for the sale price as that is all I can tell is different (the price). But I see when compared that the fourth one does state... 'marked "MP" for High pressure tested and Mag Particle Inspected.'. I just bought two of those at $79.99 a piece!! |
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1 & 3 - Bolt Marked MPI/HPT - one with logo 4 - Bolt marked MP 2 - Bolt Marked M If I'm reading that right, #1, 3, and 4 are identical in quality and testing, but differ only in the markings on the carrier and bolt? #2 is obviously the "budget" option, but it appears to only lacks an HPT'd bolt and the extractor O-ring. The full description says it is shot peened and MPI'd, just like the others, yet it is the same price as the PTAC BCG, which doesn't say anything about any bolt testing. Did I miss anything? |
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If I'm reading that right, #1, 3, and 4 are identical in quality and testing, but differ only in the markings on the carrier and bolt? #2 is obviously the "budget" option, but it appears to only lacks an HPT'd bolt and the extractor O-ring. The full description says it is shot peened and MPI'd, just like the others, yet it is the same price as the PTAC BCG, which doesn't say anything about any bolt testing. Did I miss anything? Quoted:
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1 & 3 - Bolt Marked MPI/HPT - one with logo 4 - Bolt marked MP 2 - Bolt Marked M If I'm reading that right, #1, 3, and 4 are identical in quality and testing, but differ only in the markings on the carrier and bolt? #2 is obviously the "budget" option, but it appears to only lacks an HPT'd bolt and the extractor O-ring. The full description says it is shot peened and MPI'd, just like the others, yet it is the same price as the PTAC BCG, which doesn't say anything about any bolt testing. Did I miss anything? I just received two PTAC bcg's from PSA last night. Both bolts are 'MP' marked. Not sure if that's standard for PTAC bgc's or if YMMV. |
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I just received two PTAC bcg's from PSA last night. Both bolts are 'MP' marked. Not sure if that's standard for PTAC bgc's or if YMMV. Quoted:
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1 & 3 - Bolt Marked MPI/HPT - one with logo 4 - Bolt marked MP 2 - Bolt Marked M If I'm reading that right, #1, 3, and 4 are identical in quality and testing, but differ only in the markings on the carrier and bolt? #2 is obviously the "budget" option, but it appears to only lacks an HPT'd bolt and the extractor O-ring. The full description says it is shot peened and MPI'd, just like the others, yet it is the same price as the PTAC BCG, which doesn't say anything about any bolt testing. Did I miss anything? I just received two PTAC bcg's from PSA last night. Both bolts are 'MP' marked. Not sure if that's standard for PTAC bgc's or if YMMV. I believe my ptac bcg has its bolt marked MP as well |
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I believe my ptac bcg has its bolt marked MP as well Quoted:
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I just received two PTAC bcg's from PSA last night. Both bolts are 'MP' marked. Not sure if that's standard for PTAC bgc's or if YMMV. I believe my ptac bcg has its bolt marked MP as well Interesting. The PTAC BCG that came with my Black Friday upper had no markings on the bolt. Maybe it's luck of the draw. |
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What about 35099??? I just looked at the 35099 BCG I received in the upper deal I bought from PSA last fall. It too has "MP" marked on the bolt. If you recall, this is some information and pricing on SKU #35099: Title: 5.56mm Full-Auto Profile Bolt Carrier Group Regular Price: $149.99 Special Price: $129.99 At the time, I called PSA and asked about this BCG, the phone rep told me it's batch Mag Particle Inspected. So apparently with PSA sourced bolts, they can be marked "MP" and this can mean batch Mag Particle Inspected. That is unless someone made a mistake and sent the wrong bolt? Don't know? It came in unmarked packaging. Question: SKU 46284 - 5.56 HPT/MPI M-16 Bolt Carrier Group is "marked "MP" for High pressure tested and Mag Particle Inspected". Does this mean individual Mag Particle Inspected or batch Mag Particle Inspected? AND is it individual High Pressure Tested OR batch High Pressure Tested? |
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The premium BCG with etched logo PSA sent me last month is the nicest I have ever seen. A thing a beauty. The premium BCG I recently received without logo, was not so nice... personally id try to buy all etched if i could. sadly there are too many variations weve seen in the past from PSA. no telling what is what. after they are removed from the site. |