r/ar15build
8k members
r/ar15build is a subreddit with 8k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses build, ar15, parts, upper, and first.
Popular Themes in r/ar15build
#1
Advice Requests
: "First build. New to ARs. Any advice for uppers? Looking to do a build from scratch. I want to know every component of the gun. Thanks!"
7 posts
#2
Solution Requests
: "Would any of you guys recommend the SBA4 over the blade? I found it on sale and I’m not sure if it’s worth it being I already have the Blade 2.0."
4 posts
Popular Topics in r/ar15build
#1
Build
: "Ordered an 16” PSA Build kit the other day. Just picked up this lower today. Excited to Build my first AR!"
101 posts
#2
Ar15
: "Built my first Ar15 1 year ago. I've found it to be addictive and I love it."
75 posts
#3
Parts
: "Two of my “just for fun” ARs. Parts list in comments."
38 posts
#4
Upper
: "First build. New to ARs. Any advice for Uppers? Looking to do a build from scratch. I want to know every component of the gun. Thanks!"
26 posts
#5
First
: "My First build, I user to think guns were the devil"
20 posts
#6
Barrel
: "After nearly 3 months of looking for a decent Barrel, I finally finished my Mega Arms/Sionics build. Well...finished for now."
18 posts
#7
Optic
: "First ar15 build anderson lower with psa 223 wylde upper18” ss barrel . Built myself and now for getting Optics and putting rounds through it ."
16 posts
#8
Lower
: "Ordered an 16” PSA build kit the other day. Just picked up this Lower today. Excited to build my first AR!"
16 posts
#9
Handguard
: "Here's my first but have a Handguard question"
13 posts
#10
Ar
: "My 1st Build . Be nice ♦️"
9 posts
Member Growth in r/ar15build
Yearly
+795 members(11.5%)
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Last updated: May 31, 2026