Thoughts On Using a .30cal Bore MD on a 5.56 Rifle?

Yeah, that's a long AF thread title but I couldn't think of a way to shorten it and have it still make sense.

I need to replace the A2 Birdcage on an 11.5" 5.56 SBR to set it up for a suppressor.

A friend-of-a-friend offered me a NIB uninstalled, unfired 1/2x28 LPM Eclipse for stoopid cheap.

Per LPM, even the 1/2x28 version has a .30 caliber bore.

Am I asking for trouble / baffle strike hell running something with that slightly oversized bore on a 5.56/.223 gun with a 5.56/.223 can?

If it matters, the can will either be a B&T Print XH RBS SC Ti or a Griffin Armament HUB HRT-5K AM on a Rearden Atlas Gen 2 or a Comstock Armory LPA adapter.

**PLEASE** do not turn this into a debate over the cans themselves, why one or the other sucks, what I "should" have bought instead, etc etc etc... I will not engage and will shut the thread down if it goes that way. And I fucking **HATE** that I even have to add this. 🙄

reddit.com
u/SomeRequirement6926 — 2 days ago
▲ 2 r/300BLK

AGB... Install or Not?

PSA upper and 8.5" barrel, bought as a complete upper minus CH and BCG.

I have not fired it.

Currently it has a standard gas block, and a standard carbine weight buffer and spring with an SBA 3 brace.

I'm swapping out the slim 7" PSA M-Lok handguard for a larger diameter 8" and the A2 MD it came with for a Wolfpack Armory Nighthowler.

I will be mounting an LPM Anthem K2 with a Comstock Armory LPA the can gets out of jail.

I will primarily run subsonics, but realistically some supersonics as well because I have them. 🤷‍♂️ I have no intention of running any sort of FRT.

I picked up a new Superlative Arms AGB and stainless steel gas tube.

Would you just go ahead and swap the gas block and tube while you had it apart?

Or wait and see how it runs with the fixed GB and maybe just a buffer weight change.

I really don't want to have to tear it down again tho if I'd be better off with the AGB setup from the start...

reddit.com
u/SomeRequirement6926 — 4 days ago

And Now The Waiting Game Starts

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Should ship to my FFL in a day or two, get there in two or three, plus one more for me to be able to swing by his shop to certify the eForm 4.

Then we wait. And wait. And wait some more.

I'm at 33 days on my last Suppressor Form 4, Trust, 1RP. And the wait times are getting longer...

u/SomeRequirement6926 — 22 days ago
▲ 7 r/300BLK

AB A10 Warthog 7.62 or LPM Anthem K2

Which do you prefer and why?

Gun: 8.5" 300BLK Pistol, 7.5" Slim Handguard

Use Case: LARP-ing as a HD gun, more likely for Range Fun

Ammo: Primarily Subsonics. I do have a couple hundred rounds of Supers, I'll shoot some then find a new home for the rest if they are unbearable.

Priorities: 6" , Sound Suppression , Manageable Backpressure/Gas, Minimal Tuning. Flash Mitigation is least important. $500-600 budget.

You can absolutely give yourself *"analysis paralysis"* when researching and these are the two I've settled on.

Both are a variation on a traditional welded baffle stack can.

Both are similar in weight, A10 is +/- 0.75" longer.

LPM is +/- $100 **MORE** than the AB by the time it gets in my hands accounting for tax, shipping, NFA FFL transfer fee.

I know the AB's looks are polarizing. I'm fine with them.

Spare me the "AB doesn't have theirs tested by PS so they must be hiding something." trope. Same with the "PS hasn't tested the K version so we don't know how it performs."

I've had enough debates with people about PS; I can't dispute the science, but I don't think it's the end all and be all and only factor to be considered.

u/SomeRequirement6926 — 28 days ago

AB A10 Warthog 7.62 or LPM Anthem K2

Which do you prefer and why?

Gun: 8.5" 300BLK Pistol, 7.5" Slim Handguard

Use Case: LARP-ing as a HD gun, more likely for Range Fun

Ammo: Primarily Subsonics. I do have a couple hundred rounds of Supers, I'll shoot some then find a new home for the rest if they are unbearable.

Priorities: 6" , Sound Suppression , Manageable Backpressure/Gas, Minimal Tuning. Flash Mitigation is least important. $500-600 budget.

You can absolutely give yourself *"analysis paralysis"* when researching and these are the two I've settled on.

Both are a variation on a traditional welded baffle stack can.

Both are similar in weight, A10 is +/- 0.75" longer.

LPM is +/- $100 **MORE** than the AB by the time it gets in my hands accounting for tax, shipping, NFA FFL transfer fee.

I know the AB's looks are polarizing. I'm fine with them.

Spare me the "AB doesn't have theirs tested by PS so they must be hiding something." trope. Same with the "PS hasn't tested the K version so we don't know how it performs."

I've had enough debates with people about PS; I can't dispute the science, but I don't think it's the end all and be all and only factor to be considered.

reddit.com
u/SomeRequirement6926 — 28 days ago

AB Suppressor Online Retailers

I know they are available thru Silencer Shop but TBH, I'd rather not use them.

I'm looking for a 7.62 A10.

PeaceGeek has some 5.56 A10 and some Raptor 8 "overstocks" in stock, buy no 7.62's

Anyone know what other online retailers carry the AB products?

reddit.com
u/SomeRequirement6926 — 30 days ago

No Backup Light Bulbs?

I'm not an idiot.

And this is not my first time working on a car.

Buuuuuttttt...

Why are there no backup light bulbs in my 2007 MK5 Rabbit?

I pulled the taillights so I could tint them.

Figured I'd throw some LED bulbs in for the backup lights.

Unclipped the circuit board aaaannnnddd... No bulbs and no place to put one?

reddit.com
u/SomeRequirement6926 — 2 months ago
▲ 904 r/progun+8 crossposts

California’s Stealth "Glock Ban" Isn't Just a West Coast Problem—It's the Blueprint for Nationwide Disarmament. How Do We Dismantle This in the Post-Bruen Courts?

​We need to have a serious, tactical discussion about what is happening in California, because if you think this stays in California, you aren't paying attention. The recent NY Post op-ed lays bare a terrifying reality: the "Unsafe Handgun Roster" is no longer just a localized infringement. It is being stress-tested as the ultimate blueprint for federal, backdoor gun control.

​Let’s bypass the surface-level outrage and deconstruct the underlying mechanics of this strategy. How does a government effectively ban the most ubiquitous, commonly owned handgun platform in the world without ever passing a bill called "The Glock Ban"?

​They do it through bureaucratic attrition. They mandate science-fiction requirements—like dual-placement microstamping or arbitrary loaded chamber indicators—that no manufacturer currently implements, effectively freezing the civilian market in time. But this raises a fundamental question we must force the courts to answer: If a Generation 5 Glock is mechanically superior and objectively safer than a Generation 3 Glock, how does a state justify banning the newer model under the guise of an "Unsafe Handgun Act"?

​The logical dissonance is the point. The goal isn't safety; it's a slow-motion embargo on the Second Amendment. So, how do we dismantle this legally?

Let's break down the jurisprudence.

​1. The Heller "Common Use" Paradox

​In DC v. Heller, the Supreme Court established that arms "in common use for lawful purposes" are protected. We must ask ourselves: Is there any firearm currently in existence more "in common use" than the Glock 19?

​If the baseline standard for constitutional protection is commonality among the American populace, how can a state legally construct a labyrinth of compliance that prevents the acquisition of the quintessential modern sidearm? By allowing states to ban handguns via technological prerequisites, are we not allowing lower courts to nullify Heller entirely?

​2. The Bruen Standard: Text, History, and Tradition

​Here is where the legal battle must be fought and won. Under NYSRPA v. Bruen, the burden is entirely on the state to prove that a firearm regulation is consistent with this nation's historical tradition of firearm regulation.

​When California (or any federal agency that adopts this model) defends their roster in court, we must scrutinize their arguments Socratically:

​Where is the founding-era analogue for a government demanding theoretical, unproven technology as a prerequisite for exercising a fundamental right?

​Did the colonies require blacksmiths to invent a specific type of serialized frizzen before a citizen could purchase a flintlock?

​Did the founders empower local magistrates to approve an "approved roster of safe muskets"?

​The answer is unequivocally no. The state will attempt to dredge up obscure 19th-century gunpowder storage laws or concealed carry restrictions on Bowie knives to justify their modern tech-mandates. We cannot let them conflate where you can carry an arm with whether the state can artificially ban the arm itself.

​3. The Equal Protection Clause Flaw

​One of the most glaring vulnerabilities in the California roster model is the broad exemption carved out for law enforcement officers (LEOs). If these off-roster handguns are genuinely "unsafe" for the public, why are they perfectly safe for off-duty police officers to purchase, carry, and ironically, resell to civilians at massive markups?

​Does the badge magically imbue a Glock Gen 5 with safety features? Or does this LEO exemption explicitly prove that the roster is a tiered caste system designed to restrict civilian ownership while maintaining an armed praetorian guard? Could an Equal Protection challenge under the 14th Amendment be the Trojan Horse that breaks the roster system wide open?

The Road Ahead

​This NY Post piece isn't just an opinion; it's a warning. The gun control lobby knows they cannot repeal the Second Amendment. They know they cannot pass a sweeping federal ban on semi-automatic handguns outright. So, they are exporting the California Roster. If we allow the legal precedent to stand that the government can mandate impossible features to access the market, it is only a matter of time before the ATF attempts to categorize all non-microstamped firearms as NFA items, or entirely unmailable/transferable.

​How do we best leverage the Bruen methodology to strike down the very concept of "Handgun Rosters" rather than fighting piecemeal feature bans?

​When this inevitably reaches the Supreme Court, what specific historical analogues will the opposition invent to justify technology mandates, and how do our litigators preemptively crush them?

​TL;DR: California's Glock ban via the "Handgun Roster" is a test run for a nationwide ban through bureaucratic attrition and impossible tech mandates. To defeat this, we must hammer the Bruen "text, history, and tradition" standard and expose the Equal Protection violations of LEO exemptions. The fight isn't about specific features; it's about whether the state can artificially lock us out of the modern firearms market.

nypost.com
u/MuchAd3273 — 2 months ago

Griffin Armament No Love? Why?

#Full Disclosure:# *I am new to the silencer/suppressor game, but I do know how to use the interwebz and research.*

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Why does it seem that Griffin Argument gets no love?

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Hell, not even no love but barely even a mention and some outright hate.

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I understand they had some issues early on with QC, and with things like changing designs without any sort of announcement before products were even received by customers.

Things like releasing a "V2" while the "V1" that people bought were still sitting in ATF jail.

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I understand that Austin has rubbed people the wrong way because he has a somewhat coarse personality, little social media savvy, and even less PR polish. It's obvious he knows his shit, but gawdayum his videos are hard to watch.

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He apparently pissed off a lot of people over on Arfcom.

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Then riled up the Reddit hivemind by saying PewScience isn't the end-all and be-all of suppressor sound testing and evaluation.

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I guess they don't play nice with the GunTube "influencers" either.

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From what I can tell, the equipment and methodologies they use are quality and sound etc.

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All that being said, it would seem that a can like the HUB HRT-5K AM would be included in the same conversations as the Tisha, the Rhoadie 6K, the Canik VOID, the Stacy's Mom K, etc...

​

According to Griffin's website it's <$700 for the HUB version with no mount or adapter.

It's like 4.5" long, like 11oz, and has a pretty good sized blast chamber to handle a bunch of different MD mounts. 🤷‍♂️

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Just based on that it would make my "short list" of cans for my use case:

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11.5" or 14.5" 5.56 host.

Length/Weight/Sound Suppression > Flash Suppression.

Budget DOES matter.

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What am I missing? Why are they not part of the discussion and comparos?

u/SomeRequirement6926 — 2 months ago
▲ 16 r/VAGuns

What Do We Think Of This: Atrius and OneHorse

Not VA specific, but still relevant I think.

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I've seen this all over Instagram, but not a single post about it here, in the AR15 sub or anywhere else.

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Atrius is apparently partnering with OneHorse to be an "OEM Supplier" of FRS's and OneHorse will be selling complete rifles with the Atrius FRS installed and ready to run.

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I am not sharing an opinion or an argument on either side, and I don't have any connection to either company. I'm just throwing it out there...

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u/SomeRequirement6926 — 2 months ago
▲ 10 r/ar15

What Do We Think Of This: Atrius+OneHorse

I've seen this all over Instagram, but not a single post about it here in the AR15 sub or anywhere else.

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Atrius is apparently partnering with OneHorse to be an "OEM Supplier" of FRS's and OneHorse will be selling complete rifles with the Atrius FRS installed and ready to run.

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I am not sharing an opinion or an argument on either side, and I don't have any connection to either company. I'm just throwing it out there...

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u/SomeRequirement6926 — 2 months ago

Just A Ranger Doing Ranger Things

Working my part-time gig today.

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EMS standby at a dragstrip, got here late because I was coming off shift at my regular job. (I'm a career Professional Firefighter/Medic)

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Safety Team told me to just drive my POV down to where we stage the ambulance near the end of the track.

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OK 🤷‍♂️😎

u/SomeRequirement6926 — 2 months ago
▲ 9 r/VAGuns+1 crossposts

Interesting Article on NFA Processing Times.

I found an interesting article on why the processing times do Individual VS Trust NFA filings vary so much.

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It's heavy on statistics and statistical analysis, but the general concept comes down to this.

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&gt;the NFA approval queue does not behave as one queue. It behaves as two.

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From the Executive Summary:

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&gt;First, form type, not filer type, is the dominant axis of variation. Whether a filing is submitted by a Trust or an Individual matters far less than whether it is a Form 1 or a Form 4. The Trust-versus-Individual question, which receives substantial attention in community discussion, appears in this data as a secondary effect layered on top of the primary form-type split.

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Link to full study and article:

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https://www.nfawatch.com/queue-state/the-two-queue-regime-june-2026

u/SomeRequirement6926 — 2 months ago

Repost: Weird NSV

Original post was deleted by the mods because it had my ex-wife and my son's faces in it.

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I wasn't re-writing the whole thing, so the story is in the pics.

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TL,DR: Ex-wife not only noticed weight loss, but commented/complimented on it.

u/SomeRequirement6926 — 2 months ago
▲ 31 r/NFA

Toucan Tuesday? Two Can Tuesday? Twofer Tuesday? Toofer Tuesday?

Whatever you want to call it, I got 'em.

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(Yeah, I forgot to post this yesterday. 🙄)

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My first two EVAH!

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B&T PRINT XH RBS SC Ti 5.56

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FTN5-22 Carbon Fiber printed 22LR from a local manufacturer. C4 Armory in Chesterfield County, VA

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My post in a different sub triggered a lot of negativity about the 22...why I paid for it when I could print it myself, why the manufacturer used the "non-Form-1version" or the "Form-1 version", why would they bother to get an FFL/SOT then use open source designs, etc.

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All completely unnecessary. This community is supposed to be about supporting, sharing, educating, etc.

Since I know this will get asked:

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C4 eForm 4 submitted 5/13, Approved 6/9

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B&T eForm 4 submitted 5/22, Approved 6/13

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Virginia. Trust. 1RP

u/SomeRequirement6926 — 2 months ago

Toucan Tuesday? Two Can Tuesday? Twofer Tuesday? Toofer Tuesday?

Whatever you want to call it, I got 'em today.

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B&T Print XH RBS SC Ti 5.56

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FTN5-22 Carbon Fiber printed .22LR from a local manufacturer. C4 Armory in Chesterfield, VA

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u/SomeRequirement6926 — 2 months ago

B&amp;T Print XH RBS SC

Ordered 5/11 from r/shooterschoicesc

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Form 3 submitted 5/13

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Shipped 5/14

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Delivered to FFL 5/18 (first attempt was 5/17)

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eForm 4 submitted 5/22 (Trust, 1RP)

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Approval received 6/13 (22 days)

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Now I just need the ATF to approve the Form 1 to assemble the rifle it's going on. 🤬

u/SomeRequirement6926 — 2 months ago
▲ 46 r/TirzepatideRX+1 crossposts

Do I Pick Them BOTH Up or Not?

So I am blessed that my health insurance covers Zep. 🙏

(At least for now.)

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I told my PCP last month that after 2 months on 5.0 I wanted to move up to 7.5 because I felt the "snacking" urge coming back more, I noticed a drop in the appetite suppression effects, and despite not changing my diet significantly and maintaining a consistent amount of running and lifting I had only dropped 0.4 and 0.5 pounds over the past two weeks.

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I am still 20-25 from my GW.

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He agreed, was comfortable with it and told me to send the request thru his assistant when I was due for a refill.

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I forgot to send the request until I got the notification from my pharmacy that my RX (5.0) was ready for pickup.

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I texted his assistant and asked that a new RX for 7.5 that Dr. XXX had approved be sent in.

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No problem. It was sent that day.

(I love my PCP and his team... It costs me A LOT of money, buy it is SO worth it!)😁

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I just got the notification that my RX (7.5) was ready for pickup. And discovered that the 5.0 is still showing ready as well. 👀

A quick call to the Pharmacy and, yup, insurance is covering both since it's considered a NEW RX due to the dose change.

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FWIW, I had this happen in the past when I made a change to my ADD ADHD RX. I picked up a refill just before an appointment with my MH provider where we decided to increase my dose. She sent it and it was approved since it was a new RX. Dose change = New RX. I stashed the previous, slightly lower dose pills in the medicine cabinet "in case of emergency" use. Like if my regular dose is backordered, or I forget to request a refill (Hello! ADD!)

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Sooooooo... Do I do the same thing with the slightly lower dose ZEP? I know the BUD date will be close to a year out. And the $60 isn't even coming "out of my pocket" since I use my FSA account to pay for my RX co-pays.

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What say you Reddit hivemind?

u/SomeRequirement6926 — 2 months ago
▲ 3 r/ar22

Ammo Thoughts

We know the AR22 platform can be picky about ammo.

We know it doesn't like lead round nose. It prefers copper or brass plated. We know it like 36-40 grain and 1200fps muzzle velocity.

We know CCI Mini-Mag is kind of the "benchmark" and that Aguila 38gr Super Extra HV HP, Aguila 40gr Super Extra HV RN, and Armscor 36gr HV HP are generally considered reliable. We know Cascade is highly thought of as well.

What do we think of these?

u/SomeRequirement6926 — 3 months ago