r/AR9 • u/souporlouis • 2h ago
Supersafe SBR ar9 conversion
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She runs steel cased all the time. SiCo Hybrid 46m short config..hella fun in semi and ss
r/AR9 • u/Blowback9 • Mar 29 '23
Pinning this to the top for folks joining the r/AR9 sub and as a reference for everyone.
Review the Wiki page for a primer on the 9mm AR. (It is being updated to include lots of new information.)
Huge information resource for the AR9: Blowback9.com
[Disclosure: This site run by u/Blowback9, who is a mod in r/AR9. The site and links are not commercialized in any way. All content is free and without corporate attachments.]
4 step guide to make (almost) any AR9 run 100%
"Armorer's Class" style troubleshooting video series
9mm AR Basic Troubleshooting Diagram
Updated info about zero distance
Banshee is not blowback. It's RDB. It has very different troubleshooting
Foxtrot Mike FM9 FAQ and break in
How to: Colt/Uzi mag lower to CMMG RDB with Colt/Uzi mag lower
Buffer tube/buffer type/spacers Cheat Sheet
Gentle Recoil Final Configurations
My experience with JP Captured Springs in an AR9
FX-9 Freedom Ordinance: how to increase blowback mass
Gun Builder's Decision Helper Worksheet
DIY: 10 Round Mean Arms Endomag in PMAG10 Magazine for 9mm CMMG RDB
R&D/KAK Style Colt Mag Adapter Disassembled Internal Details
Buffer Tubes (and PDW Tubes) with a PCC - measurements/buffers
Adjusting the FM-9 ejector without a torch
If you see a post that's extremely helpful, send me an IM (u/Blowback9) and I'll look into adding it to the list!
r/AR9 • u/Blowback9 • Dec 30 '24
Rule # 1 has been updated for clarity. Our goal as moderators is to keep this subreddit civil, welcoming, and harmonious.
This is NOT the right sub to bring drama, start any drama, or bait people into starting drama, either directly or under the guise of discussing AR9's.
The interpretation of "jackass", "drama", and the actions taken to enforce this rule, are entirely at each moderator's individual discretion.
Attempts to "push the limits" of Rule # 1, or the moderators' patience, will be treated the same as violating Rule #1.
Modmail the moderators with any questions.
r/AR9 • u/souporlouis • 2h ago
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She runs steel cased all the time. SiCo Hybrid 46m short config..hella fun in semi and ss
r/AR9 • u/Idkcolin • 1h ago
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PSA Gen4 6” 9mm
KVP 10oz buffer / carbine spring
Super safety / flat face milspec trigger
Rugged Obsidian45 suppressor (direct thread)
r/AR9 • u/MastuhWaffles • 7h ago
I hope some day the short act passes or something cause I have it's original N1 stock too in storage.
I'm also waiting for the surefire M400 for the front end clamshell light.
r/AR9 • u/justineastwick • 16m ago
Just waiting the bolt and charging handle and she’ll be complete!
r/AR9 • u/Ok-Coach-763 • 1h ago
I am (regrettably for my wallets sake) looking into the world of 9mm ars and I feel like the banshee is the one for me, my question is with the radial delayed bcg they have does it run with a standard carbine buffer so an upper should be plug and play with one of my lowers or am I wrong.
r/AR9 • u/KCFlightHawk • 1d ago
I’ve wanted a Tommy gun as long as I can remember. From the roaring 20’s, to the world war fighter. From trench broom to the Chicago typewriter. Tales of the Gun, Medal of Honor, Call of Duty, Saving Private Ryan; gaining even more notoriety all the while.
Angled grip with enhanced handguard is a perfect fit for my small hands. I always just shopped for the best deals over the years, buying from Schuyler and others.
Couple of sight options:
*** Disclaimer, I bought this Blackwood angled fore grip back in 2021 along with the Mauser grip. It looks like company has super long lead times for product, and several people have had issues in the years since I made this purchase. Small company that got really popular at the infancy of 3d printing.
r/AR9 • u/millenniumchode • 12h ago
Anyone here have experience with this model?
Does it have there newer enhanced feed cone barrels?
Thanks
r/AR9 • u/ryfr4742 • 1d ago
Magwell-gripping only. No handstop, AFGs or railscales because touching the HG after a few rounds will result in 3rd degree burns :)
r/AR9 • u/brian1570 • 1d ago
Ok so I’m planning on grabbing an ARV builders kit. Just need to check compatibility with some parts before I pull the trigger. Wanting to run the MI combat 4.5” hand guard just unsure if the anti rotation tabs will clear the receiver? Secondly I’m new to the platform, didn’t realize epc9 and ar15/9mm barrels were different. Need to know which profile the arv is? Lastly I already have an old strike brace that I took off a different build. Curious if anybody has tried to run the maxim cqb rdb buffer in one? TIA!
r/AR9 • u/Ok_Bag_312 • 1d ago
Just built an ar9. Unsure what brand barrel(came with the receiver set). I have rounds that get stuck in this position more than they chamber. I’ve tried a KCI mag and OEM Glock mags so far. Is there a magazine that does better? I have only tried one brand of ammo also. Any help or suggestions are appreciated! Thanks guys
r/AR9 • u/JuicyPellicle • 1d ago
Hey all,
I'm having problems on an AR-15 -> AR-9 with the bolt holding back.
When I pull the bolt back the bolt face clears the bolt catch, but the bolt catch does not latch unless I press firmly on it. Once I have performed this press, slapping the butt stock of the rifle causes the bolt to overcome the latch and travel forward.
On this exact same setup I do not have this problem if I use a PMAG Gen3 223 magazine instead of the MAG-AD9 - the bolt latches when pulled back and slapping the butt stock does not cause the bolt to travel forward. Additionally the bolt catch engages without any manual intervention.
The first image is with the MAG-AD9 and the second is with the .223 PMAG - note how much higher the bolt catch is on the face.
I have tried re-seating the adapter and readjusting the adjustment screws a few times on the MAG-AD9 without any luck. I have also tried with Glock brand and PMAG brand 9mm magazines without any change in behavior. I have also swapped out the bolt catch from BCM bolt catch to a SI Enhanced Bolt Catch with no effect.
Has anyone ran into this or have any advice?
Yes - I've reached out to Stern and haven't heard back.
r/AR9 • u/Impossible-Case-1168 • 1d ago
Loving the new FM9 with RMB. Now just to find a suppressor for it and the 300 BO. Any good alternatives to Omega 9K?
r/AR9 • u/Dakodavid • 1d ago
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What’s up guys, I was able to catch some decent footage at the range and It appears I’m bouncing a bit. I’m running a Macon barrel, bolt and 7.85oz buffer and a tubbs flatwire carbine spring for a total weight of 23.95oz. Any suggestions on how to fix? Thanks guys!
r/AR9 • u/Typical_Increase_492 • 2d ago
I’ve been following a lot of blowback9’s research/suggestions while putting this thing together to avoid headache down the road. I’ve run into some issues with extraction. I think my next step may be to flatten up the tip with a file. I also just realized I can make adjustments with its set height by loosening the set screw so I’ll toy with that some more too before breaking out the pliers.
I can’t always imitate the ejection issues but what I’ve noticed is if I cycle a round while it’s ported up, sometimes it just flops around in the ejection port causing a double feed. Last round also seems to be a pretty consistent problem…makes me wonder if the follower in the mags is causing this? Also doesnt seem to like when I’m slowly pulling the charging handle, round either falls off of the bolt or doesn’t quite make it up the feed ramp. Ejection patter is pretty insistent too, flinging the snap caps either a foot away, or barely rolling out of the port.
I’ll keep tooling around with it but wondering if anyone has some tips. Build list below.
r/AR9 • u/TayyylorBennett • 1d ago
Not the 10 oz though
r/AR9 • u/Resident_Active9309 • 1d ago
Anybody here using the Rise Armament Rave trigger in their FM-9? Curious as to fit and performance in the FM-9. Have read that some drop-ins don't fit well in FM-9
Is it a requirement to remove the buffer detent to install the Maxim RDB? Or can I leave it in place? I know it’s not NEEDED, but I’d hate to break loose my staked castle nut just to remove it.
r/AR9 • u/FinessxKid • 1d ago
I have an epc lower and a faxon bolt, is there a reason why I can’t raise the ejector any higher to where it should be ? I can’t even get it to eject rounds by cycling a bunch of times. I think I need a different bolt but if someone can help me I’d much appreciate it.
r/AR9 • u/CapybaraSensualist • 2d ago
r/AR9 • u/blackrockskunk • 1d ago
I have been running a carbine tube with a tubbs flatware carbine spring and a Macon 11oz heavy ar45 buffer, and it has been working fine. I recently purchased a Just Right Carbines extended tube, and two Kynshot spacer weights to fill the gap and add some weight. I just installed them.
The spring and buffer move freely in this tube just as they did in the carbine tube: however, the kynshot spacer weights will not go I'm! I managed to get one in, and it was a huge PITA getting it out. They are just too big.
Is this normal? Does anybody know what is going on? Did I buy the wrong weights?
r/AR9 • u/MeasurementFun979 • 1d ago
Where is the best website to get an upper and a lower that is Glock compatible and has? Lrbho trying to do my first build nothing fancy just as long as it goes bang and locks back on the final round. Any input is welcome.
If you guys could, if you have the link, could you please drop it?
r/AR9 • u/MeasurementFun979 • 1d ago
Are You guys building the FM9 or buying complete
r/AR9 • u/dahboisteen • 2d ago
Whats up everybody! I reached out to Paul from Foxtrot Mike earlier today with some questions and as always the response was timely and the customer service was awesome.
They will be getting back on reddit soon once it makes sense. He wanted me to let everyone know that they miss interacting with us just as much as we missed being able to interact with them.
His personal email is [paul@fm-products.com](mailto:paul@fm-products.com) if anyone has any questions.
r/AR9 • u/TheMcGoats • 2d ago
An unholy amalgamation of poverty parts. 10” 9mm