SBR an AR with 7.5 barrel?

[cap6888]

Is it possible to get an SBR approved lengthwise on an AR with a 7.5 inch barrel? I saw this stock......

https://www.magpul.com/products/moe-sl™-carbine-stock

And was thinking if it has a 14.4 inch LOP fully extended, it might get me to the magical 29 OAL. Thoughts?

 

[bshedwick]

I think by MD rules it must by 30" OAL

 

[Wayne1one]

I think by MD rules it must by 30" OAL

Nope, 29" OAL

 

[outrider58]

Is it possible to get an SBR approved lengthwise on an AR with a 7.5 inch barrel? I saw this stock......

https://www.magpul.com/products/moe-sl™-carbine-stock

And was thinking if it has a 14.4 inch LOP fully extended, it might get me to the magical 29 OAL. Thoughts?

14.4-5 might just get you there but, that's a pretty long LOP. Never mind, I see where you're going.

 

[Wayne1one]

Is it possible to get an SBR approved lengthwise on an AR with a 7.5 inch barrel? I saw this stock......

https://www.magpul.com/products/moe-sl™-carbine-stock

And was thinking if it has a 14.4 inch LOP fully extended, it might get me to the magical 29 OAL. Thoughts?

That stock wouldn't do the trick, LOP is measured from the trigger. The longest collapsible stock that Magpul offers is the ACS & ACS-L stocks. For your application you probably would need one of the Vltor A5 buffer tubes and a pinned extended muzzle device.

 

[Wfilardo]

I have a 9" barrell used MAGPUL ACS-L (15") and barely got over 29"

 

[outrider58]

Looks like that's only gonna get you to 26.5''

 

[Wayne1one]

I have a 9" barrell used MAGPUL ACS-L (15") and barely got over 29"

This, 8.5" barrel (pinned FH), ACS-L and the extended butt pad and just made it to 29.25"

 

[Wfilardo]

Yep, my flashhider is removable so I had to measure to end of barrell.

 

[Jasonshooter]

Is that 29" with the stock collapsed or fully extended ?

 

[sleepingdino]

Just get a different upper so you don't waste your time with the ATF.

 

[outrider58]

Is that 29" with the stock collapsed or fully extended ?

Fully extended.

 

[Wayne1one]

Just get a different upper so you don't waste your time with the ATF.

easier fix would be to just pin an extended flash hider and that would bring his barrel up a 9.5 inch barrel. The rest of the length could then be made up at the stock...... Not a big deal.

 

[outrider58]

What caliber are we talking about?

 

[cap6888]

5.56

 

[outrider58]

5.56

You could go pistol (depending on origin of lower) but, with that barrel length, you will definitely lose a lot of velocity.

 

[pwoolford]

I had to have a 7.5 and now I rarely ever shoot it. Just sooooo loud! 10.5-11.5 is a great length for an AR.

If you really want 7.5 you will probably have to pin a flash hider. Now a 6-7" 9MM is super fun!

 

[outrider58]

...or a 300 AAC!

 

[sundaeman]

8.5" .458 maybe?