User Panel
User Panel
User Panel
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Posted: 5/15/2017 9:43:52 PM EDT
[#1]
300bo hits full manufacturer velocity at about 9inches and has no issues with a pistol length gas. So if it is for a pistol only, go 300bo over 556. Radical firearms/PSA has them complete on the lower end$$.
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Posted: 5/15/2017 9:49:53 PM EDT
[#2]
I like 300 BLK for the AR pistol. It is designed around short barrels and doesn't require non standard magazines, uppers, bolts, lowers, or other parts.
Some complete 300BLK uppers: http://www.shop.masdefense.com/300-AAC-Blackout_c54.htm http://palmettostatearmory.com/ar-15-05/barreled-upper-assemblies.html?upper_caliber=1357 http://www.primaryarms.com/1+Upper-Complete-Assemblies/CaliberGauge+300-BLK/MCategories+AR-15-Upper-Receivers |
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Posted: 5/15/2017 10:24:28 PM EDT
[#3]
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Posted: 5/16/2017 1:21:05 AM EDT
[#4]
Quote History |
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Posted: 5/16/2017 5:08:58 AM EDT
[#5]
I would also look at PSA they have a bunch of 8.5" and 16" barrels. For length comparison from my testing a 8.5" will give you about 2050 fps, a 14.5" will give you about 2200 fps. So a 10.5" is going to give you very little increase over a 8.5" maybe 30-40 fps.
PSA |
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Posted: 5/17/2017 12:22:13 PM EDT
[#6]
Quote HistoryQuoted:
The Seekins would be a higher end upper than the Bear Creek. Based on specs the Bear Creek is more entry level. Its barrel is unlined phosphate not nitrided like the Seekins. The lack of chrome lining or nitriding, is probably what keeps costs down. I was originally thinking more the 10" barrels just because they offered a bit more handguard length and for a reloader maybe a few more options in powders such as slightly slower ones. |
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Posted: 5/17/2017 11:22:12 PM EDT
[#7]
Quote HistoryQuoted:
How would the Seekins compare to this PSA upper? The PSA doesn't have a BCG or CH, but thinking more about overall build and material quality. I was originally thinking more the 10" barrels just because they offered a bit more handguard length and for a reloader maybe a few more options in powders such as slightly slower ones. That said, I build all my uppers. It allows me to shop around, watch for deals, and select the parts I want. |
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