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AR-15 Mil-Spec M4 Buttstock

FREE SHIPPING on orders of $399 or more

SKU OH-BS01UPC 850078799586

Close-up of a black rifle stock featuring textured grip and ventilation slots, showcasing durable craftsmanship.

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  • Limited Lifetime Warranty
  • Made in the U.S.A.
Details

Specifications

Furniture
StockOne Horse M4 6 Position
Other
Mil-spec diametermade for a mil-spec carbine buffer tube (mil-spec and commercial tubes are different diameters)
Origin
ManufacturerOne Horse
Customer Reviews

Reviews

Real feedback from customers who have experience with this product.

5.0
★★★★★
1 review
Keven K. Sep 04, 2026
★★★★★

Good basic no thrills stock.

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About

AR-15 Mil-Spec M4 Buttstock

The One Horse AR-15 Mil-Spec M4 Buttstock is a polymer, 6-position adjustable M4 stock for AR-15 rifles. It slides onto a mil-spec carbine buffer tube and locks into one of six positions, so you can set your length of pull. It is the same One Horse M4 6 position stock that comes on One Horse rifles and on the AR15 Complete Lower Receiver.

  • Polymer M4-style buttstock
  • 6-position adjustable
  • Mil-spec diameter: made for a mil-spec carbine buffer tube (mil-spec and commercial tubes are different diameters)
  • Made in the U.S.A.
  • Limited Lifetime warranty

Need a tube? The AR-15 Carbine Buffer Tube Kit has the buffer tube, carbine buffer, carbine spring, castle nut and end plate. Want a heavier buffer? See our H1, H2 and H3 buffer chart. See the AR-15 buttstock guide for what fits.

Every One Horse rifle and component is made in America with U.S.-sourced materials, U.S. manufacturing and quality control at every step.

AR-15 Mil-Spec M4 Buttstock questions

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.

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Free shipping on orders of $399 or moreLimited Lifetime warranty

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MSRP: $29.99

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Financing available on orders $600+ with Credova