- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
If you have a legal M4/M16 lower, can attach any caliber AR upper?
Posted on 7/22/21 at 10:38 pm
Posted on 7/22/21 at 10:38 pm
So if you have a preban automatic M4/M16 or converted AR, if you pop say a 450 Bushmaster upper on it, does that mean you'd have an automatic 450 Bushmaster?
I saw a video with someone firing a 300 AAC blackout AR automatic on Youtube. It was a reputable channel so I assume it was a legally owned firearm which to my understanding means they had to have at least the lower or DIAS from before 1986. And because it was shooting 300 AAC which wasn't created until the mid to late 2000s obviously the full rifle wasn't that old.
I'll be honest I am super jealous of anyone who was able to get a hold of these lowers before the ban. Just seems like a shite ton of fun to go out to the range and blast away even if it isn't super "practical" in any real life scenario. I've been enjoying getting into firearms over the last year but reading about how much easier things used to get and for very cheap is a little disheartening as it seems like those liberties may never be restored and things seem to get more and more restricted over time.
I saw a video with someone firing a 300 AAC blackout AR automatic on Youtube. It was a reputable channel so I assume it was a legally owned firearm which to my understanding means they had to have at least the lower or DIAS from before 1986. And because it was shooting 300 AAC which wasn't created until the mid to late 2000s obviously the full rifle wasn't that old.
I'll be honest I am super jealous of anyone who was able to get a hold of these lowers before the ban. Just seems like a shite ton of fun to go out to the range and blast away even if it isn't super "practical" in any real life scenario. I've been enjoying getting into firearms over the last year but reading about how much easier things used to get and for very cheap is a little disheartening as it seems like those liberties may never be restored and things seem to get more and more restricted over time.
This post was edited on 7/22/21 at 10:39 pm
5
Posted on 7/22/21 at 10:46 pm to jlovel7
As long as the bolt is made for full auto it will run full auto.
.300 black out and 5.55 use the same bolt so yes. Now obviously sub sonic won’t run full auto.
Not necessarily
.300 black out and 5.55 use the same bolt so yes. Now obviously sub sonic won’t run full auto.
quote:
I saw a video with someone firing a 300 AAC blackout AR automatic on Youtube. It was a reputable channel so I assume it was a legally owned firearm which to my understanding means they had to have at least the lower or DIAS from before 1986.
Not necessarily
Posted on 7/22/21 at 10:47 pm to civiltiger07
quote:
Now obviously sub sonic won’t run full auto.
Why is that? Doesn't subsonic ammo generate enough blowback to load another round in the chamber?
Posted on 7/22/21 at 10:49 pm to jlovel7
quote:
Why is that? Doesn't subsonic ammo generate enough blowback to load another round in the chamber?
Not always but if you have a bolt that is tuned to run sub sonic then it’s possible.
I have some sub sonic .223 rounds that don’t even unlock the bolt on an AR.
This post was edited on 7/22/21 at 10:50 pm
Posted on 7/22/21 at 11:13 pm to jlovel7
Manufacturers can own a post ban full auto.
May have been a buddies gun or something
May have been a buddies gun or something
Posted on 7/23/21 at 12:04 am to jlovel7
You can attach any caliber upper you want. Any barrel length too without doing an additional SBR stamp. The lower is the machine gun so the upper doesn't matter. Look at Lage uppers for Mac 11s. They make the guns actually shootable. If you want, I can get you in the machine gun market for pretty cheap comparative to a lot of other stuff like m16s (and yes, completely legal form 4 from a dealer I know who has some transferables). If you are interested, send me an email at my username at gmail.
Posted on 7/23/21 at 7:25 am to civiltiger07
You need an adjustable gas block. Those are pretty much required when running suppressors.
Posted on 7/23/21 at 7:27 am to jlovel7
quote:
blast away even if it isn't super "practical"
Rotate your safety selector switch two clicks from safe to rock'n'roll...and watch your lane... heehee
Followed by the sound of freedom being sprayed downrange.
Practically speaking, the 3 round burst was really controllable, you could generally get all 3 rounds on target before needing to compensate for the muzzle rise.
Posted on 7/23/21 at 7:49 am to ml
quote:
You need an adjustable gas block. Those are pretty much required when running suppressors.
Not necessarily. They help but there are other effective ways of tuning guns.
The goal is to delay unlocking of the gun. You can add any of or combos of the following; adjustable gas block, heavier buffer, suppressor bolt carriers. The suppressor bolt carrier all work in different ways. Some have changeable mass, some have extended cam paths for the bolt to take longer to unlock, and some will vent gas coming back with a switch lever for suppressed and unsuppressed. For me, the ideal rifle will just barely cycle unsuppressed (anemic cycling) and cycle perfect suppressed (perfect 3 o'clock ejection).
This post was edited on 7/23/21 at 10:10 am
Posted on 7/23/21 at 9:44 am to jlovel7
Posted on 7/23/21 at 12:07 pm to ChatRabbit77
Yeah, the heavier buffer and suppressor bcg are to handle the excess gas... which could be remedied by an adjustable gas block. Remember, it's always better to address the problem instead of making adjustments for the symptoms.
Posted on 7/23/21 at 5:05 pm to ml
My point is you don't need one. Let's say you have 14.5" or 13.7" pin and weld gun that you don't want to SBR. It only has a low pro gas block that is non adjustable. Are you really going to pay someone to un pin and weld, switch the gas block, and re pin and weld? No. The heavy buffer will fix it fine.
Page 1 of 1
Popular
Back to top
Follow TigerDroppings for LSU Football News