r/AR9 is a subreddit with 32k members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses ar9, build, bufferless, ftr, and safety, 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
: "SBR Stock recommendations?"
4 posts
#2
Advice Requests
: "First AR9 pistol build - any advice on the build or optics recommendations"
3 posts
#3
Pain & Anger
: "Finally got it Finished"
1 post
Popular Topics in r/AR9
#1
Ar9
: "My first Ar9 build"
6 posts
#2
Build
: "My first ar9 Build"
3 posts
#3
Bufferless
: "New Bufferless 9mm coming soon"
3 posts
#4
Ftr
2 posts
#5
Safety
2 posts
#6
Firing Pin
: "2026: UXCELL Firing Pin spring is no longer recommended"
2 posts
#7
Mag
: "Colt Mags >"
2 posts
#8
9mm
: "New bufferless 9mm coming soon"
2 posts
#9
Glock
2 posts
#10
Adapter
2 posts
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
Eye Candy
: "First AR9 — 5” Foxtrot Mike VFM Build"
23 posts
#2
Troubleshooting
: "Calling all fellow 'smiffs,"
6 posts
#3
Radial Delay
: "Colt 9mm smg retromod"
4 posts
#4
Part Compatibility
: "Trigger Kicker on Brigade BM9"
3 posts
#5
Roller/Bearing Delay
: "BM9"
2 posts
#6
Deal Alert
: "Colt mag adapters on sale"
2 posts
#7
Pre-Build Review
: "What do yall think about this build?"
1 post
Member Growth in r/AR9
Yearly
+6k members(22.0%)
Similar Subreddits to r/AR9
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Last updated: September 2, 2026