r/ar15build
8k members
r/ar15build is a subreddit with 8k members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses build, ar15, parts, upper, and first.
Popular Themes in r/ar15build
#1
Solution Requests
: "Looking for suggestions for full upper"
5 posts
#2
Advice Requests
: "Any idea why this is happening? It’s the Strike Industries hand guard moving not the Hogue grip. Thanks."
5 posts
Popular Topics in r/ar15build
#1
Build
: "Working on a new Build."
101 posts
#2
Ar15
: "1st Build - 10.5 Inch .300BLK Pistol"
75 posts
#3
Parts
: "1st build"
38 posts
#4
Upper
: "Looking for suggestions for full Upper"
26 posts
#5
First
20 posts
#6
Barrel
: "Sunday lower build. LRB Arms lower, Black Ops drop in trigger, Areo parts kit and Tippmann Arms T5 adjustable brace. Now waiting on my Barrel and upper to arrive soon."
18 posts
#7
Optic
: "Finding a red dot"
16 posts
#8
Lower
: "Sunday Lower build. LRB Arms Lower, Black Ops drop in trigger, Areo parts kit and Tippmann Arms T5 adjustable brace. Now waiting on my barrel and upper to arrive soon."
16 posts
#9
Handguard
: "New to AR builds/mods and have a question about this Handguard swap"
13 posts
#10
Ar
9 posts
Member Growth in r/ar15build
Yearly
+726 members(10.4%)
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About
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Last updated: July 6, 2026