$78.99
3 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The One Horse OH-BR07 is a 7.5-inch AR-15 barrel chambered in 5.56 NATO, built for folks who want the most compact platform an AR can reasonably run. At this length you're deep into pistol and short-barrel territory, and One Horse matched the barrel with a pistol-length gas system so it cycles the way it should instead of fighting you. The 1:7 twist rate handles the heavier bullet weights well, so you're not stuck feeding it only light-grain stuff to keep groups honest.
This barrel is machined in a medium profile from 4150 steel, which is the kind of chrome-moly-vanadium steel that holds up to heat and keeps its dimensions when things get warm. The whole barrel wears a black nitride finish inside and out, giving you solid corrosion resistance and an easier surface to wipe clean after a range day. It tips the scale at right around 1.1 pounds, so it keeps a short build feeling nimble and front-light, which is a big part of why people go this short in the first place.
If you're assembling a compact 5.56 pistol, a truck gun, or a dedicated suppressed setup, this barrel drops into any standard AR-15 upper and lines up with mil-spec parts the way you'd expect. The 1/2×28 muzzle threads take common flash hiders, brakes, or a suppressor without any fuss. It's a straightforward foundation that lets you finish the build your way rather than locking you into someone else's parts list.
One Horse machines these in the USA, and the OH-BR07 is a sensible pick if you want a no-drama short barrel that runs and doesn't ask a lot of you. Pair it with the right gas block, buffer, and BCG and you've got the heart of a genuinely compact 5.56 rig.
This 7.5-inch barrel is designed for compact 5.56 NATO AR pistols and short-barrel platforms where a shorter overall length matters most. It's a popular choice for truck guns, suppressed setups, and maneuverable home-defense configurations. The pistol-length gas system is matched to this barrel length so it cycles reliably in a short package.
Full-power 5.56 NATO loads run best in a barrel this short, and the 1:7 twist stabilizes heavier bullets in the 55 to 77 grain range well. Underpowered or light target loads can sometimes struggle to cycle a short gas system, so stick with quality 5.56 for the most consistent results.
Yes, the 1/2×28 muzzle threads accept standard suppressors and muzzle devices. The pistol-length gas system is tuned for unsuppressed use but still runs suppressed. If you plan to shoot suppressed a lot, an adjustable gas block helps manage the extra gas and keeps things running smoother.
It is. This barrel drops into any standard AR-15 upper receiver and lines up with mil-spec components, so you can complete your build with common parts. You'll still need a matching gas block, gas tube, and bolt carrier group to finish it out.
| UPC | 850078799166 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | OHBR07 |
| Barrel Length | 7.5'' |
You must be logged in to post a review.
Reviews
There are no reviews yet.