r/AR9 is a subreddit with 33k members. The most common kinds of discussions are solution requests, and the community frequently discusses ar9, sights, build, stern, and eject, and they frequently recommend/review muzzle device, pcc, and chest rig.
A place to discuss variants of the AR series that are chambered for pistol cartridges, including 9mm, .40S&W, .45ACP, 10mm, and 22LR.
Popular Themes in r/AR9
#1
Solution Requests
: "9MM Bandolier Suggestions?"
1 post
Popular Topics in r/AR9
#1
Ar9
2 posts
#2
Sights
1 post
#3
Build
1 post
#4
Stern
1 post
#5
Eject
1 post
#6
Lower
1 post
#7
Noveske
1 post
#8
Mike 9
1 post
#9
Unicorn
1 post
Products Discussed in r/AR9
Muzzle Device
12 reviews
#1
Kaw Valley Precision
4.5★ from 2 reviews
#2
Mach 3
4.0★ from 1 review
#3
Bixler
4.0★ from 1 review
Pcc
9 reviews
#1
Mach 3
4.0★ from 2 reviews
#2
Energetic Arms
5.0★ from 1 review
#3
SLR Synergy
5.0★ from 1 review
Chest Rig
7 reviews
#1
Spiritus Systems
4.5★ from 2 reviews
#2
Haley Strategic
4.0★ from 1 review
#3
Chicom
4.0★ from 1 review
Flair Used in r/AR9
#1
Part Compatibility
: "Newest Trigger Kicker Host 🧈 BRIGADE BM-9"
6 posts
#2
Eye Candy
: "Pretty happy how it turned out"
5 posts
#3
Troubleshooting
: "Mean Arms Exomags Issues"
5 posts
#4
Radial Delay
: "My First “AR 9”"
4 posts
#5
How To
: "Possible to build a colt pattern AR pistol for sub $700?"
2 posts
#6
Pre-Build Review
: "For the love of the game"
1 post
#7
Roller/Bearing Delay
: "Delayed MP5 setup to convert to a true SD options possible FRT in future"
1 post
#8
Deal Alert
: "PA Sale"
1 post
Member Growth in r/AR9
Yearly
+6k members(21.8%)
Similar Subreddits to r/AR9
r/AR10
64k members
11.6% / yr
r/ar15build
8k members
7.0% / yr
About
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Last updated: September 30, 2026