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Started By
Message
re: Official AR-15 thread
Posted on 4/30/23 at 8:44 pm to finchmeister08
Posted on 4/30/23 at 8:44 pm to finchmeister08
so bought a the DD barrel. i guess i can hold onto the BA barrel or return it.
with that said, how many of y'all check headspacing?
with that said, how many of y'all check headspacing?
0
Posted on 4/30/23 at 9:06 pm to finchmeister08
quote:
this is the way you feel, i might as well keep the Aero BCG i got in nickel boron
Huge difference in an Aero Nickel Boron bcg and one made to USGI spec by a USGI contractor like AO (not Aero) or DD.
This post was edited on 4/30/23 at 9:07 pm
Posted on 4/30/23 at 10:39 pm to Jack Ruby
Care to elaborate?
Posted on 4/30/23 at 10:56 pm to Jack Ruby
quote:
Huge difference in an Aero Nickel Boron bcg and one made to USGI spec by a USGI contractor like AO (not Aero) or DD.
What are the huge differences? “Mil-spec” doesn’t mean anything when it comes to quality other than it meets a minimum standard for mass production. MREs are “mil-spec”.
Posted on 5/1/23 at 1:14 am to Flats
USGI spec BCGs have standards like chrome plating inside the gas key and bolt chamber, which are more effiecent and typically more durable than run of the mill modern nitride BCGs, which lack these steps.
The bolts are also all HP and MP tested, which is not the case in for many other bolts.
Don't take my word for it. Take it from a guy who has repaired, reviewed, and spec'd thousands and thousands and thousands of BCGs.
LINK
The bolts are also all HP and MP tested, which is not the case in for many other bolts.
Don't take my word for it. Take it from a guy who has repaired, reviewed, and spec'd thousands and thousands and thousands of BCGs.
LINK
Posted on 5/1/23 at 8:04 am to finchmeister08
I still prefer a C158 bolt over 9310. The latter can potentially be better but only if it's properly treated.
You also have companies like BCM, Colt, DD, Spike's, etc. that individually test and inspect bolts instead of batch testing.
You also have companies like BCM, Colt, DD, Spike's, etc. that individually test and inspect bolts instead of batch testing.
Posted on 5/1/23 at 9:26 am to Jack Ruby
quote:
which are more effiecent and typically more durable than run of the mill modern nitride BCGs, which lack these steps.
Who told you that chrome was more durable than nitride?
That video shows exactly what I'm talking about. At one time the whole BCG was chrome plated; that was mil-spec. Now the exterior is phosphate; I never saw a BCG in the military that had 100% chrome plating. Which one is better? Or do they both just work, and the military figured out that chroming the outside was a needless expense? Has his carrier key with the non mil-spec staking failed? Obviously not.
A Larue barrel isn't mil-spec; would you take a mil-spec chrome lined barrel that only has to shoot 2-3 MOA to be acceptable or a Larue? Saying that something is "mil-spec" tells you what you have; that's all it does. Something that isn't mil-spec may be better, might be worse.
Posted on 5/1/23 at 9:40 am to Jack Ruby
quote:There's also a ton of first hand experience at places like Battlefield Las Vegas, which runs a ton of different guns to failure. They had the best initial experience with DD and LMT BCGs but have used PSA chrome-lined uppers (including their premium BCGs) with no significant differences from a performance standpoint.
Don't take my word for it. Take it from a guy who has repaired, reviewed, and spec'd thousands and thousands and thousands of BCGs.
The moral of the story is...keep some spares for pretty much everything.
This post was edited on 5/1/23 at 9:52 am
Posted on 5/1/23 at 4:41 pm to TideCPA
So I took the Aero BCG back to the gun store and exchanged it for the DD. It was on $30 more ($199).
Posted on 5/1/23 at 8:36 pm to Flats
quote:
Who told you that chrome was more durable than nitride?
Pretty much anyone with in-depth knowledge will tell you HC chrome is one of the best coatings commercially available. Nitriding is cheap and, more importantly for high-volume companies, much less of an environmental headache. It is not as durable either from physical wear, environmental exposure, or tendencies to promote/prevent fatigue failure, the DoD has tested this extensively. The military has tested pretty much every coating system you could name, and several you have no idea exist, and only one currently has shown potential to be a replacement for the current mil-spec. That SOTR YouTube channel does an excellent job of explaining the deficiencies of many coating systems, he also has no problem goring the sacred cows of the AR world. Doesn't matter the brand, if it doesn't pass his inspections he'll tell his audience.
Posted on 5/2/23 at 2:13 am to Clames
quote:
Pretty much anyone with in-depth knowledge will tell you HC chrome is one of the best coatings commercially available.
I would too. The only barrels I own are chrome plated or raw stainless. But anyone with in-depth knowledge would also tell you that salt bath nitriding is also among the best treatments currently available. It’s harder (not by much) than chrome and more corrosion resistant. It doesn’t hold up to heat as well as chrome and the military needs to be able to fire cyclic rates, and I would also never choose it for an M249 barrel, but we’re talking AR parts and I doubt he’s shooting full auto through multiple mag dumps.
I don’t own a full auto AR that I use for regular mag dumps, I doubt he does either, and the advantage I just discussed regarding chrome when it comes to full auto applies to barrels. The idea that a chrome line gas key, of all things, is going to offer some performance difference over a gas key that was nitrided is just silly.
Posted on 5/2/23 at 8:58 am to Flats
hey fellas...
let's forget about the pistol brace rule for a moment...
wasn't there a rule/law/regulation that allowed vertical foregrips on AR-15 pistols that exceeded an overall specific length? i thought i heard in a YouTube video that you could, but i don't remember when/where i heard it.
eta: overall length has to be 26" or more for a vertical foregrip.
let's forget about the pistol brace rule for a moment...
wasn't there a rule/law/regulation that allowed vertical foregrips on AR-15 pistols that exceeded an overall specific length? i thought i heard in a YouTube video that you could, but i don't remember when/where i heard it.
eta: overall length has to be 26" or more for a vertical foregrip.
This post was edited on 5/2/23 at 9:59 am
Posted on 5/2/23 at 1:07 pm to finchmeister08
I think the barrel also has to be at least 12" long or it'll be classified as a pistol.
I'm trying to figure out if an "other firearm" can still have a brace. Battle Arms Deveopment sells this for Connecticut gun owners and apparently it's still legal.
LINK
Either that or the ATF doesn't have a problem with the tailhook like they do SB Tactical's products.
Okay now I'm confused because this is also CT legal but has nothing on the buffer tube.
LINK
I'm trying to figure out if an "other firearm" can still have a brace. Battle Arms Deveopment sells this for Connecticut gun owners and apparently it's still legal.
LINK
Either that or the ATF doesn't have a problem with the tailhook like they do SB Tactical's products.
Okay now I'm confused because this is also CT legal but has nothing on the buffer tube.
LINK
This post was edited on 5/2/23 at 1:13 pm
Posted on 5/2/23 at 3:39 pm to MetroAtlantaGatorFan
Good luck sorting out the ATF rules for SBRs, pistols, and AOWs, because the ATF themselves has no idea. It wasn't an issue for them until the standard military issue rifle became a 14.5" carbine, and the civilian market tried to adapt despite the rules.
Posted on 5/2/23 at 7:21 pm to TideCPA
Huh? The M4 wasn't standard issue until the past 20 years or so (and only for Army infantry, Marine Corps grunts still used the M16A4 until 2014).
Posted on 5/2/23 at 7:36 pm to MetroAtlantaGatorFan
19K Abrams tankers got them in the mid 90s. 2 per tank crew as crew serve weapons. The M9 is a tankers personal weapon.
M16s couldn't be stowed properly in the M1A1 and M1A2, so we got them first.
M16s couldn't be stowed properly in the M1A1 and M1A2, so we got them first.
Posted on 5/3/23 at 10:15 am to El Segundo Guy
Right, but that's not standard issue. Even grunts were still rocking M16A2s during the invasion of Iraq.
Posted on 5/3/23 at 10:31 am to MetroAtlantaGatorFan
quote:That's what I'm saying. Civilians typically want what the military has, which is why the NFA was written the way it was to begin with (at the time no military was using sub-16" rifles).
Huh? The M4 wasn't standard issue until the past 20 years or so (and only for Army infantry, Marine Corps grunts still used the M16A4 until 2014).
The ATF never had much of a headache on the NFA rifle restrictions until the M4 became standard fare for infantry. Now the entire purpose behind the 16" restriction in the NFA (that shorter rifles weren't suitable for militia use) is completely turned on its head. Technically, the NFA's SBR restrictions are unconstitutional on the same exact grounds the government argued in 1934 in US v. Miller that they weren't. Hence the current friction between gun owners and the ATF, which is tasked with enforcing an asinine rule that no longer has any basis in logic or the constitution.
Posted on 5/5/23 at 11:16 am to TideCPA
you guys ever pay attention to these monthly Aero Precision build sets? apparently, they're different every month.
here's May's. the release on the first friday of the month.
here's May's. the release on the first friday of the month.
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