Looking for an AR pistol? American-made One Horse AR-15 pistols in Brownstown, Indiana: compact 7.5- and 10.5-inch builds in 5.56/.223 and .300 Blackout, including SD models with a suppressor.
Shop AR pistol lengths in 7.5 and 10.5 inch, chambered in 5.56/.223 and .300 Blackout. Each AR-15 pistol ships to your FFL.
An AR pistol is an AR-15 with a short barrel (7.5 or 10.5 inches on One Horse models) and no shoulder stock, so it stays compact for home defense, the truck or suppressed shooting. Choose 5.56/.223 for affordable practice ammo, or .300 Blackout if you plan to run subsonic loads and a suppressor. The SD models come set up with a One Horse suppressor, Plan B Included. Every One Horse AR-15 pistol is made in Brownstown, Indiana, carries a Limited Lifetime warranty and ships to your FFL dealer.
10.5-inch SD pistols, including two in a custom M81 Camo finish.
SKU: OH-OP03
SKU: OH-OP04
SKU: OH-OP03-1
SKU: OH-OP04-1
Want a custom rifle too? See custom builds →
Express-level tuning with an FRR trigger group, FRR gas system and H2 buffer installed. Ships without a selector. See the FRR lineup →
American-made · Limited Lifetime warranty
Pick your pistol, choose your FFL dealer, and we’ll ship it there. Questions about a model? See our warranty or find a dealer near you.
Looking for Express FRS? See Express →
Age and ownership rules vary by state and city. Check your federal, state and local laws, and ask your FFL dealer, before you buy.
| Pistol | Line | Caliber | Barrel | Twist | Gas | Thread | Included | Price |
|---|---|---|---|---|---|---|---|---|
| 7.5″ 5.56/.223 Pistol | Standard | 5.56/.223 | 7.5″ | 1:7 | Carbine | 1/2×28 | 30 round magazine | |
| 7.5″ .300 BLK Pistol | Standard | .300 BLK | 7.5″ | 1:7 | Carbine | 5/8×24 | 30 round magazine | |
| 10.5″ 5.56/.223 Pistol | Standard | 5.56/.223 | 10.5″ | 1:8 | Carbine | 1/2×28 | 30 round magazine | |
| 10.5″ .300 BLK Pistol | Standard | .300 BLK | 10.5″ | 1:7 | Carbine | 5/8×24 | 30 round magazine | |
| 10.5″ 5.56/.223 SD | SD | 5.56/.223 | 10.5″ | 1:7 | Carbine | 1/2×28 | Ashe 5.56 suppressor, Plan B mount included | Notify Me When Available |
| 10.5″ .300 BLK SD | SD | .300 BLK | 10.5″ | 1:7 | Pistol | 5/8×24 | Ryn .30 cal suppressor, Plan B mount included | Notify Me When Available |
| 10.5″ 5.56 SD Custom M81 Camo | SD | 5.56/.223 | 10.5″ | 1:7 | Carbine | 1/2×28 | Ashe 5.56 suppressor, Plan B mount included | |
| 10.5″ .300 BLK SD Custom M81 Camo | SD | .300 BLK | 10.5″ | 1:7 | Pistol | 5/8×24 | Ryn .30 cal suppressor, Plan B mount included | |
| 10.5″ Express MLOK | Express | 5.56/.223 | 10.5″ | 1:7 | Carbine | 1/2×28 | Atrius FRS installed | |
| 10.5″ Express QUAD | Express | 5.56/.223 | 10.5″ | 1:7 | Carbine | 1/2×28 | Atrius FRS installed | |
| 12″ Express .22LR Pistol | Express | .22LR | 12.1″ | 1:12 | — | 1/2×28 | Atrius FRS installed | Notify Me When Available |
Specs and prices from the live One Horse product pages and cards. Standard pistols include a 30 round magazine.
Pick a 7.5″ standard pistol in 5.56/.223 or .300 BLK.
Pick the 7.5″ or 10.5″ .300 BLK pistol. Want it suppressed? The 10.5″ .300 BLK SD comes with the Ryn .30 cal. Upgrading the bolt? See the 300 Blackout BCG. Still picking a caliber? Read 300 Blackout vs 556.
Pick an SD pistol: Ashe 5.56 on 5.56/.223, Ryn .30 cal on .300 BLK, Plan B mount included. You fill out a 4473 at your dealer.
Pick an Express pistol. Built To Run™, with the Atrius FRS installed, tuned and test fired by One Horse.
Plan B mount included.
One Horse suppressors are heavy duty, rugged and built with quality in mind. They aren't rated for full auto fire, but they're made to take abuse.
Three lines of AR-15 pistols: standard pistols in 7.5″ and 10.5″ (5.56/.223 and .300 BLK), SD pistols sold with a One Horse suppressor (10.5″, 5.56/.223 and .300 BLK), and Express FRS pistols (10.5″ 5.56/.223 MLOK and QUAD, plus a 12″ .22LR).
An AR-15 pistol is an AR-15 built as a pistol with a short barrel. One Horse AR pistols use 7.5″, 10.5″ or 12.1″ barrels and a mil-spec buffer tube.
The 7.5″ and 10.5″ .300 BLK pistols, and the 10.5″ .300 BLK SD models sold with the Ryn .30 cal suppressor. The .300 BLK SD has a 1:7 twist and pistol-length gas.
The four SD pistols. 5.56/.223 SD models come with the Ashe 5.56 and .300 BLK SD models come with the Ryn .30 cal, Plan B mount included. On .300 BLK, One Horse pairs only the Ryn.
Order online and choose a dealer close to you at checkout. We ship to that dealer. Once it arrives, you fill out a 4473 and take it home once approved.
Only the Express pistols: the 10.5″ Express MLOK, 10.5″ Express QUAD and 12″ Express .22LR. Each ships with the Atrius FRS installed, tuned and test fired by One Horse. Standard and SD pistols do not offer the FRS. Want to add your own selector or Forced Reset? See Forced Reset Ready™ pistols and SBRs.
Both are 10.5″ 5.56/.223 Express pistols with a 1:7 twist and carbine-length gas. The MLOK has an M-LOK handguard and the QUAD has a quad rail.
You must be at least 21 to buy a pistol.
Order online and choose a dealer close to you at checkout. We ship to that dealer, and you pick it up there after your ID check and the required background check.
Orders of $399 or more ship free.
Yes. One Horse pistols are backed by a Limited Lifetime warranty.
Your cart's empty. Here's where most people start.
Free shipping on orders $399 or more
Declassified · Live now
Sarge and Archie, four builds honoring Vietnam Veterans. Launch pricing through Sunday, Nov. 15. Built To Run™. 5% of gross sales of the drop firearms sold in November goes to Columbus Indiana Huey, an all-volunteer veterans nonprofit.
Wheels down at the LZ in
Trouble? Sign up on the drop page
