AR-9 Build Questions

[campinginaz]

Bought a PSA AR-V 8" 9mm this weekend after looking through this thread

 

[shorepatrol]

Whelp, bolt release doesn't function. Back to PSA

 

[Yellowcarbon]

I built a 9mm upper about 10 years ago before the current wave of products were available. I used a RRA 9mm upper, bolt and barrel chopped to 4.5" (threaded for suppressor). I used a VM-Hytec Uzi mag block that inserts like a magazine so I can use it on my AR SBR lower without messing with dedicated mag blocks. I got an oversized YHM handguard that allows my suppressor to fit inside it. It runs without any problems with anything I feed it. I can also stick in on my SBR lower in seconds.

Then when braces and Glock mags became a thing, I did a dedicated 9mm build. I got a Quarter Circle 10 Glock lower/upper. I can't even remember the barrel & bolt carrier I used, but it is 7" long. I finished it just as ammo jumped through the roof, so it has sat untested for years now.

 

[Az_Gunner]

For me, the most reliable feeding 9mm AR mag system has been the EndoMag conversion of Magpul magazines. The feed ramp geometry is not a radical angle and is very gentle in delivering hollow-points to the chamber. The neat thing is that you can use a standard AR15 lower and no need to drill and pin a conversion feed block in the magwell to use Glock or Colt/Uzi mags.

opplanet-mean-arms-restrictive-states-endomag-9mm-10-round-black-2101169-av-1.jpg

I know I’m a little late, but I second the endo mag setup as I’ve used them since day one - I’ve also been able to modify the inserts to fit in pmag 20’s rather than using the intended pmag 30’s. - keeps the package nice and compact in a backpack if need be - this is my 4.5” Gibbz side charging AR9 with BA polished feed ramp

 

[pneuby]

Some $503 and changed delivered to your FFL.....

https://www.extarusa.com/pistols

 

[campinginaz]

I built a 9mm upper about 10 years ago before the current wave of products were available. I used a RRA 9mm upper, bolt and barrel chopped to 4.5" (threaded for suppressor). I used a VM-Hytec Uzi mag block that inserts like a magazine so I can use it on my AR SBR lower without messing with dedicated mag blocks. I got an oversized YHM handguard that allows my suppressor to fit inside it. It runs without any problems with anything I feed it. I can also stick in on my SBR lower in seconds.

Then when braces and Glock mags became a thing, I did a dedicated 9mm build. I got a Quarter Circle 10 Glock lower/upper. I can't even remember the barrel & bolt carrier I used, but it is 7" long. I finished it just as ammo jumped through the roof, so it has sat untested for years now.

That sounds like a pretty nice set up! Thank you for the information!

 

[campinginaz]

For me, the most reliable feeding 9mm AR mag system has been the EndoMag conversion of Magpul magazines. The feed ramp geometry is not a radical angle and is very gentle in delivering hollow-points to the chamber. The neat thing is that you can use a standard AR15 lower and no need to drill and pin a conversion feed block in the magwell to use Glock or Colt/Uzi mags.

opplanet-mean-arms-restrictive-states-endomag-9mm-10-round-black-2101169-av-1.jpg

I know I’m a little late, but I second the endo mag setup as I’ve used them since day one - I’ve also been able to modify the inserts to fit in pmag 20’s rather than using the intended pmag 30’s. - keeps the package nice and compact in a backpack if need be - this is my 4.5” Gibbz side charging AR9 with BA polished feed ramp

That is a nice looking setup! I'm not one for cosmetics but it looks awesome. I've heard a lot of good things about Gibbz as well. Thank you for sharing and providing pictures!

 

[AZHTfreak]

For me, the most reliable feeding 9mm AR mag system has been the EndoMag conversion of Magpul magazines. The feed ramp geometry is not a radical angle and is very gentle in delivering hollow-points to the chamber. The neat thing is that you can use a standard AR15 lower and no need to drill and pin a conversion feed block in the magwell to use Glock or Colt/Uzi mags.

opplanet-mean-arms-restrictive-states-endomag-9mm-10-round-black-2101169-av-1.jpg

Built mine with a PSA 9mm complete upper, a mil-spec lower with a carbine spring, H3 buffer and 5 quarters in the back to get the BCG-bolt catch spacing correct. Sooo much fun and runs like a sewing machine with EndoMags - LRBHO bonus...!

 

[campinginaz]

I want to thank everyone who contributed to this thread. My build is complete! I'll create a separate post with the build.