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View Poll Results: Which 300 blk upper?
PSA 11 28.95%
MAS 1 2.63%
Hardened 2 5.26%
Radical 3 7.89%
other 21 55.26%
Voters: 38. You may not vote on this poll

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Old October 13th, 2018, 09:08 PM #1
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AR pistol

Which upper would you get? I'm primarily interested in something for HD that I'd shoot supers and subs, but neither with a can. I haven't fully decided between 8.5" and 10.5". I like the compactness of the 8.5, but would go 10.5" if there's a large impact on accuracy. Velocity should only be about 100fps, so nothing crazy advantageous between the two. With 1/8 barrels, I don't know if the 10.5 would help better stabilize heavier projectiles or not. I also don't know if a 10.5 would be more likely to be overgassed due to more dwell time, or if it would be more forgiving across a wide variety of ammo choices. Help

PSA 8.5" upper-
It's cheap, with a bcg and ch included. Drawbacks are a long wait till they finally ship the derned thing,1/8 twist instead of 1/7, and the handguard is shorter than the others. I probably also prefer a linear muzzle device to keep noise away. I haven't really found accuracy data on them except people's generic "shoots well", but am leary of going 8.5 instead of 10.5 due to the 1/8 twist. I don't have plans to toss a can on anytime soon.

https://palmettostatearmory.com/psa-...165449777.html

Mas defense 8.5" with linear comp-
it's more expensive by about $150 than the PSA, but it has the longer handguard and muzzle device I'm interested in. It also has 1/7 twist, with the option of a "match" barrel upgrade. It seems like this shouuuuuld shoot better, especially with subs, because of that. I don't really see a lot of reviews giving hard data on performance. They don't seem to have as big a track record as PSA, but seem to have better customer service if something does go wrong. I'm leary that they give two options for what the bolt steel in their bcgs could be.

https://www.masdefense.com/product-p...b1-mdnm-10.htm


Hardened arms-
They're more expensive than PSA, but still only 1/8 twist, and the handguard options I like come with a brake that I don't. They seem to have a decent reputation though, so I figured I'd toss emm in here

https://www.hardenedarms.com/ecProdu...r%20w/HD%20SMC

Radical firearms-
This one is promising. It's PSA cheap, but with 1/7 twist. The rail on it is shorter than I'd like though. With a linear comp, I'd like something more like a 9" mlok rail for mounting a light out further.

https://www.joeboboutfitters.com/Rad...0hbar-7fcr.htm



SOooo...which one out of these cheapies is where you'd go? Or would you just do something different/build your own? With the price of the PSA and radical, it almost doesn't make that much sense to piece one together for more loot.
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Old October 13th, 2018, 09:39 PM #2
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Put one together with a SLR block. Trust me on that.
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Old October 14th, 2018, 11:45 AM #3
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Those prices do make it hard to justify a build, I'll give you that. 5 years ago, I spent as much/more just on the barrel(s) for my 300BLK projects.

I voted other/build, simply because I just don't trust the materials/workmanship at that price level - quality parts, and quality people assembling them, aren't cheap. May be an unfounded distrust as I haven't dealt with some of the manufacturers you've listed, just my thoughts on it.
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Old October 14th, 2018, 12:53 PM #4
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I vote "other" and if you want a quality HD upper that is ready to go right out of the box, then I think a Windham Weaponry upper is a great choice. Not cheap, but you get what you pay for:
https://shop.windhamweaponry.com/col...ur9sfsb-300-7m

I also have had great results from BCM:
https://www.bravocompanyusa.com/AR-1...Group-s/31.htm

I have 2 PSA uppers (one is a 10.5" pistol in 5.56), they are solid but not as well put together or QC'd as WW or BCM. If you want to only do informal recreational shooting, then PSA is just fine. For HD, I would get something better or build your own; or at least go through the SOTAR build class (with the PSA upper option) so you can have an expert guide you though rebuilding it and insure it is to spec.

Finally, for the build your own from select parts option; you will need specialized tools, but you can borrow from the membership here, and it's fun and rewarding to build your own. There are numerous good parts to choose from.
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Old October 14th, 2018, 01:25 PM #5
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I agree with above. If you go the PSA or Radical Firearms option there is a reasonable chance that some assembly details wont be 100%. Statistically you could get lucky and have no issues. I brought a Radical 10.5Ē Upper from a member here and took it to the SOTAR Build class. It was ok but Chad did find a few minor issues. My muzzle device wasnít tight enough and didnít have a crush washer also the screws holding the hand guard to the adaptor were somewhat loose. My barrel nut wast torqued really really tight.

Iím happy with it now and probably have 1000 rounds through it.
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Old October 14th, 2018, 04:52 PM #6
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Thanks guys. I figured it'd probably be good to go over any of these to check alignment and torque at a minimum. Anyone have experience with MAS defense?
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Old October 15th, 2018, 08:17 PM #7
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None with MAS. But I'd probably opt to spend the $29 and get the stainless barrel.

*I always worry about getting a nitride barrel, and they didn't do the nitride process before the barrel extension was installed.
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Old October 15th, 2018, 11:30 PM #8
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I have worked on all of them and I would not pick any of them as they sit. They can be rebuilt to be reliable performers.

I would choose the 8 over the 10 in .300.
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Old October 15th, 2018, 11:50 PM #9
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Quote:
Originally Posted by clandestine View Post
I have worked on all of them and I would not pick any of them as they sit. They can be rebuilt to be reliable performers.

I would choose the 8 over the 10 in .300.
Yeah, the 8.5s and 9s seem like the good pick for length. I am finding some conflicting info on twist rate though. Lots of people say 1/8 won't stabilize subs and you need 1/7, but there's also tons of folks saying 1/8 stabilizes subs just fine. I figure there's a reason aac and bcm went with 1/7.

Any manufacturers put out a solid upper for <$400? Out of the above list, are there ones that you'd rank higher than others? If you could speak to the reasons for any ranking that would be appreciated as well.

Thanks for the input.
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Old October 16th, 2018, 01:34 PM #10
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Quote:
Originally Posted by smokey0118 View Post
Yeah, the 8.5s and 9s seem like the good pick for length. I am finding some conflicting info on twist rate though. Lots of people say 1/8 won't stabilize subs and you need 1/7, but there's also tons of folks saying 1/8 stabilizes subs just fine. I figure there's a reason aac and bcm went with 1/7.

Any manufacturers put out a solid upper for <$400? Out of the above list, are there ones that you'd rank higher than others? If you could speak to the reasons for any ranking that would be appreciated as well.

Thanks for the input.
Of the ones you listed, I would choose PSA. They are not very consistent but they are more consistent than the others on the list based on my experiences.

There is no one that makes any .300 upper that I would trust out of the box in that price range, but like I said, its possible to improve a budget priced upper.

I would stick with the faster twist if possible.
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