AR-15 CQB 16.5″ .300 Blackout
FFL transfer required.
A short, suppressor-ready .300 Blackout carbine tuned for close quarters, built as a complete system with optic, light, and sound management dialed in from the first round.
Reference HARC061 travels with your message.
Specifications
- Caliber
- .300 AAC Blackout
- Barrel Length
- 16.5 in
- Twist Rate
- 1:7
- Gas System
- Carbine-length, adjustable
- Overall Length
- 33.5 in (stock collapsed)
- Weight
- 6.9 lb (bare)
- Finish
- Type III hard-coat anodized / Cerakote Graphite Black
Build Components
- Barrel Horizon Arms Research
16.5" 1:7 button-rifled, suppressor-ready muzzle threading
- Handguard Horizon Arms Research
13.5" free-float M-Lok, slim profile
- Trigger Geissele
SSA-E two-stage, 3.5 lb
- Optic Holosun
HE510C-GR enclosed reflex, green circle-dot
- Muzzle Device SureFire
SOCOM 3-prong flash hider / suppressor mount
- Light SureFire
M600DF Scout with ARISAKA offset mount
The Build Story
Built for the hallway, not the bench
This is the rifle we reach for when the distance is measured in feet. .300 Blackout was engineered for exactly this job: full power from a short barrel, and subsonic-quiet behind a can. We tune the adjustable gas block so the action runs clean both supersonic and suppressed, then prove it across both before it leaves the shop.
A complete system, not a stripped lower
We don’t hand you a bare carbine and a parts list. The Holosun enclosed reflex, the SureFire Scout, the offset mounts and the sling hardware are selected, installed, and zeroed as one weapon. The geometry is set up for a fighting grip and a fast cheek weld, because a defensive gun has to disappear into the shooter.
Built and tested the way it’ll be carried
Every CQB build is assembled by hand, torqued to spec, and function-checked the way our founders learned to trust their equipment: under time, under stress, and with the lights off. Reliability isn’t a feature here. It’s the entire point.
Ready to make this one yours?
Builds are configured to order around how you'll actually carry and use them. Start a conversation and we'll spec it with you.