9mm AR question

HonestFool03 · Oct 8, 2017

Been out of the loop since all the newer imposed MD regulations. So I've got a few questions.

I have a few lowers that I haven't built. These were purchased before the 2013 (I think I have the year correct?) restrictions.

Am I legally allowed to build one of these into a 9mm AR? It will have to meet the newly imposed OAL requirements now, correct? Would it have to be an HBAR? Would I also be able to SBR it to a configuration SHORTER than the OAL requirements now because I had owned the lower before all of this had been enacted?

I *think* the easiest route for me to go is building it as a pistol....but I'd also like to know all my options.

teratos · Oct 8, 2017

HonestFool03 said:
Been out of the loop since all the newer imposed MD regulations. So I've got a few questions.

I have a few lowers that I haven't built. These were purchased before the 2013 (I think I have the year correct?) restrictions.

Am I legally allowed to build one of these into a 9mm AR? It will have to meet the newly imposed OAL requirements now, correct? Would it have to be an HBAR? Would I also be able to SBR it to a configuration SHORTER than the OAL requirements now because I had owned the lower before all of this had been enacted?

I *think* the easiest route for me to go is building it as a pistol....but I'd also like to know all my options.

You can build a 9mm AR. Rifle will have to meet OAL rules. 29”. Pistol? Do what you like.

Bikebreath · Oct 8, 2017

I wouldn’t was a pre ban lower on 9mm. I’d just save it for building .223/5,56 AR. No restrictions on the lower for 9 mm AR

Squaregrouper · Oct 8, 2017

Bikebreath said:
I wouldn’t was a pre ban lower on 9mm. I’d just save it for building .223/5,56 AR. No restrictions on the lower for 9 mm AR

Agreed. You can use any lower for a 9mm build and a dedicated 9mm lower will likely cost less than a lower + adaptor.
Your pre-ban lowers don't have the restrictions for builds. 9mm is exempt from the restrictions, so most will argue you're "wasting" a pre ban lower on a 9mm build.

HonestFool03 · Oct 8, 2017

if the rifle would have to meet OAL rules regardless if the lower was bought pre ban or not, then it'd probably make sense to just buy a new lower and build it out as a pistol.

Thanks guys

outrider58 · Oct 8, 2017

Build all your lowers as pistols first. Just mock them up that way. Then build them into anything you want. It will give you unlimited versatility later on down the road.

9mm AR question

The #1 community for Gun Owners of the Northeast

Member Benefits:

HonestFool03

Active Member

teratos

My hair is amazing

Bikebreath

R.I.P.

Squaregrouper

Kragaphile

HonestFool03

Active Member

outrider58

Eats Bacon Raw

Users who are viewing this thread

Latest posts

Forum statistics

Latest threads

Forum statistics

Share this page