300 BLK pistol build... possible?

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  • outrider58

    Eats Bacon Raw
    MDS Supporter
    Jul 29, 2014
    49,810
    My bad, I think I got a little confused as my understanding of this morphed.

    I think Teratos put it best when he described it as “magic” haha.

    He is the Magic Man (Mama).
     

    alucard0822

    For great Justice
    Oct 29, 2007
    17,643
    PA
    Much appreciated. I’ll probably just buy one new through an FFL this will make sure I do everything correctly. Just wanted to make sure there weren’t additional MD laws when it came to a 300 BLK pistol. So I guess I’ll keep shopping for one, haha.

    As irrational as gun control laws actually are, I suppose it saves me money on more things I can’t have...


    Edit to add another question:
    But if you buy a lower as other and make it a pistol, or as part of a whole pistol, then later throw a rifle upper on it, is it forever a rifle or can it go back again? I know no one would know, but trying to understand the law and WTH the people who wrote it were thinking.

    Much of this comes from a criminal case, lawsuit, and court rulings involving the T/C encore/contenders, if you bought the receiver, it was an "other" and could be assembled as a rifle or pistol, if you bought it in a pistol config, it was a pistol, rifle config was a rifle, simple enough. Then came a "kit" that included a receiver with a pistol grip, stock, and both pistol and rifle length barrels, the ATF originally pushed that if you used the rifle barrel, and then went back to a pistol, aka using the kit as intended, it was an NFA violation, ended up in court, and the ATF was found to be wrong.

    their definition:
    the term “pistol” is defined by the Act’s implementing regulations, 27
    CFR 479.11, as “a weapon originally designed, made, and intended to fire a projectile
    (bullet) from one or more barrels when held in one hand, and having (a) a chamber(s) as an
    integral part(s) of, or permanently aligned with, the bore(s); and (b) a short stock designed
    to be gripped by one hand and at an angle to and extending below the line of the bore(s)”

    so if your lower is ORIGINALLY assembed as a pistol, then provided it is never assembled with both a short barrel, AND a stock, or in a config with a stock AND <26" OAL, then it is, and will always be a pistol, and can be CONVERTED to a rifle with >16" barrel and stock, and back again as much as you want.

    So for every lower built, good idea to take a pic sans stock, to show it's original pistol configuration, if you decide to "return" it to it's pistol config later on. Braced pistols have a ton of legal benefits over SBRs, especially in MD, and building from a lower has benefits beyond most any other way to acquire an AR pistol in MD, you can buy assembled lowers and uppers, and just slap them together if you don't want to build, but IMO it's the only way to fly.
     

    CelticWarrior

    Member
    Feb 16, 2013
    17
    Much of this comes from a criminal case, lawsuit, and court rulings involving the T/C encore/contenders, SNIP

    As an amateur historian who likes understanding the why, thanks for the detailed explanation.

    I haven’t spent much time here over the years, but thanks to “quarantine” find myself with a little more time. Either way, I’m starting to appreciate the community you all have created.


    Edit for spelling. I swear it was either spell check or I was drunk!
     
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    pablo1965

    Epistemophilic
    Nov 2, 2016
    56
    Baltimore County
    300 B/O build

    I’m sure this has been asked before but the only threads I could find were dated.

    Is it possible to build a 300 blackout in 7.5 to 10.5 barrel length? I’d love a honey badger, but don’t have the money. Would like a sugar weasel, but even a PSA upper would be nice. Then a suppressor would be in the plans at some point in the future.

    Obviously the first two would be purchased as a pistol, if available to do so in this totalitarian state.

    If I have an ar, could I just throw a PSA upper on it? I’d have to take off the stock so it doesn’t become an SBR, but could I put on a sig brace or would I have to leave the buffer tube bare (not preferable).

    I definitely don’t want to do anything illegal, which is why I’m asking. But the more I look into this I realize just how ass backwards this state is. They continue passing more gun laws and crime goes up. It’s almost like criminals don’t follow the law...


    Been home in quarantine has left me thinking of the possibilities. Love the idea of the BLK with subs



    Here is a 300 black out pistol build of mine.
     

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    outrider58

    Eats Bacon Raw
    MDS Supporter
    Jul 29, 2014
    49,810
    As an armature historian who likes understanding the why, thanks for the detailed explanation.

    I haven’t spent much time here over the years, but thanks to “quarantine” find myself with a little more time. Either way, I’m starting to appreciate the community you all have created.
    You're into the history of electric motors?
     

    RuralRifleGuy

    Active Member
    Aug 16, 2018
    918
    Queenstown
    Everyone else has answered the questions, but I like sharing photos of my firearms. I have both sizes, they work great, no issues having either in the state.

    The 10.5" is missing sights now because I've been indecisive, it's getting fixed sights and SBR'd very soon. The 7.5" is getting a Dead Foot Arms 2.5" buffer system with a tailhook brace to make it even shorter and a new lower that's FDE. Both are getting suppressors this year. Both are loud currently, especially the 10.5" with the flaming pig muzzle device but are extremely fun to shoot.
     

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    Tungsten

    Ultimate Member
    Jan 1, 2012
    7,230
    Elkridge, Leftistan
    Can you still buy a lower as an "other"?

    My memory is hazy but I thought the last time I walked into a shop either "other" or "pistol" (but not both) were the only options other than rifle. But since we have to follow the waiting period regardless of the designation for a stripped lower, why would anyone ever sell it as anything other than a "pistol" or "other"?
     

    CelticWarrior

    Member
    Feb 16, 2013
    17
    You're into the history of electric motors?

    Haha. You caught it before I did. I think I was typing one handed while putting a baby to sleep. Obviously not a historian of spelling or linguistics! (Actually, the History of English podcast is interesting... or extremely boring depending on who you ask). Hahaha

    Back to shopping... wife won’t be happy!
     

    outrider58

    Eats Bacon Raw
    MDS Supporter
    Jul 29, 2014
    49,810
    Wasn't it Ben Franklin that invented the very first armature?

    Two armature historians in one day! :lol2:

    When I was a kid, back in the 20th century, my brother built a model car that came with an electric motor option. He had to wind the armature himself! Came with the core and a spool of copper wire and how-to instructions. After that, every kit we built came with a finished motor.
     

    John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,726
    Socialist State of Maryland
    Two armature historians in one day! :lol2:

    When I was a kid, back in the 20th century, my brother built a model car that came with an electric motor option. He had to wind the armature himself! Came with the core and a spool of copper wire and how-to instructions. After that, every kit we built came with a finished motor.

    When I was a kid in the 1950's, Linburgh Line model ships had motors that you made from plastic castings and wound the armature with copper wire. I thing they used a C cell battery to turn the motor. They worked great in the bath tub until the little parts wound up in the drain and dad had to clean it out.
     

    outrider58

    Eats Bacon Raw
    MDS Supporter
    Jul 29, 2014
    49,810
    When I was a kid in the 1950's, Linburgh Line model ships had motors that you made from plastic castings and wound the armature with copper wire. I thing they used a C cell battery to turn the motor. They worked great in the bath tub until the little parts wound up in the drain and dad had to clean it out.

    I built a few of those, of course in the modern days of the '60, the motors came already assembled.

    OP, sorry about the thread drift...
     

    Shore88

    Active Member
    Dec 20, 2020
    206
    Eastern Shore
    I know this has probably been covered in a more recent post but I can’t seem to locate one. I’d like to build a AR-15 .300 Blackout in 16” for deer hunting. From most accounts here it appears this is a legal AR in Maryland. PSA even lists the barrel as heavy, which I understand is one of MSP’s requirements. That said, PSA had a complete AR-15 .300 BO in 16” for sale recently so I ordered it. I received an email stating it was a copycat and they could not ship it to Maryland. I’m confused. The Anderson MFG .300 BO is listed as not banned on the MSP website while the Bushmaster .300 BO is listed as banned. They look like the same setup to me. The PSA is not listed. Is this, or is it not a copycat? I might try simply ordering the upper and see what happens (when it’s back in stock), but I want to be sure it’s legal. Any help would be appreciated. Thanks.
     

    Michigander08

    ridiculous and psychotic
    MDS Supporter
    May 29, 2017
    7,685
    I know this has probably been covered in a more recent post but I can’t seem to locate one. I’d like to build a AR-15 .300 Blackout in 16” for deer hunting. From most accounts here it appears this is a legal AR in Maryland. PSA even lists the barrel as heavy, which I understand is one of MSP’s requirements. That said, PSA had a complete AR-15 .300 BO in 16” for sale recently so I ordered it. I received an email stating it was a copycat and they could not ship it to Maryland. I’m confused. The Anderson MFG .300 BO is listed as not banned on the MSP website while the Bushmaster .300 BO is listed as banned. They look like the same setup to me. The PSA is not listed. Is this, or is it not a copycat? I might try simply ordering the upper and see what happens (when it’s back in stock), but I want to be sure it’s legal. Any help would be appreciated. Thanks.

    300 blackout should be OK at any weight; heavy or not. PSA has a reputation of being picky with MD residents. Why don't you try Brownell or Windham?
     

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