Home › PISTOLS › 10.5" .300 BLK AR-15 Pistol

One Horse Pistols

10.5" .300 BLK AR-15 Pistol

This pistol ships free Rifles & Pistols Ship Free to your FFL

SKU OH-OP02UPC 850078799807

A black American-made One Horse AR-15 pistol with a modular handguard and high-capacity magazine against a white background.

Add to cart

Loading price and options…

  • Limited Lifetime warranty
  • Ships to your dealer

How buying a pistol works

  1. Order online.Pick any options above, then check out.
  2. Choose your dealer.At checkout choose a dealer that is close to you for transfer.
  3. Pick it up.Your dealer checks your ID, runs the required background check and hands it over. You must be at least 21 to buy this pistol.

See what’s in the build

What’s in the build

One Horse Pistol Specifications

Barrel
Caliber.300 BLK
Barrel ProfileMedium
Muzzle Thread5/8×24
Twist Rate1:7
Gas SystemCarbine
Upper
Handguard Length9.25 in.
Charging HandleStandard
Lower
Buffer TubeMil-Spec
Furniture
GripA2
In the box
Magazine30 Round Magazine
Test FiredEvery firearm is test fired before it ships
Customer Reviews

Reviews

Real feedback from customers who have experience with this product.

5.0
★★★★★
3 reviews
Devon S. Sep 02, 2026
★★★★★

Ordered this pistol with the Gold BCG. Really a sweet setup. Picked it up and went to the farm to put some rounds through it. Truly a quality setup and happy to buy made in America!

Lawrence F. Aug 24, 2026
★★★★★

Wanted a short .300 BLK without spending a fortune. Feels solid, handles great and hasnt gave me any problems.

Tim L. Aug 14, 2026
★★★★★

I was looking for a compact .300 blackout that didnt cost a fortune and this one fit the bill. The 10.5 inch setup handles great. Fit and finish was good when I got it and everything worked like it should on the first range trip. Really happy with it so far.

Write a Review

Verified purchase required

Only logged-in customers who have purchased this product can leave a review.

About

10.5" .300 BLK AR-15 Pistol

Every One Horse firearm and component is made in America with uncompromising standards. We use U.S.-sourced materials, U.S. manufacturing, and strict quality control at every step. No shortcuts, no imported surprises — just dependable parts built by people who take pride in American craftsmanship. When you run One Horse, you’re running gear you can trust every single day.

10.5" .300 BLK AR-15 Pistol questions

How do I get my pistol?

At checkout choose a dealer that is close to you for transfer. We ship to that dealer and you pick it up there.

How old do I need to be?

You must be at least 21 to buy this pistol.

Does it ship free?

Orders of $399 or more ship free.

Is there a warranty?

Yes. One Horse backs it with a Limited Lifetime warranty.

Ready when you are

Get your 10.5" .300 BLK AR-15 Pistol

Add to Cart
Ships freeLimited Lifetime warranty

Upgrade Your BCG

Magazine

Rein In The Noise!

Take Charge with Breek!

Get your Vortex Optic!

MSRP: $699.99

In stock