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LUTH-AR - AR-15 Modular Carbine Buttstock Assembly MBA-3 - FDE
LUTH-AR - AR-15 Modular Carbine Buttstock Assembly MBA-3 - FDE

MSRP: $164.95
Sale Price: $129.95
JoeBob dun saved you $35.00!

Availability: Usually Ships in 24 Hours
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Can be paired with any Commercial OR Mil-Spec 6-Position Buffer Tubes!

The Luth-AR Modular Buttstock Assembly (MBA) for AR style carbines is designed to replace the standard buttstock on your AR. The MBA-3 is designed to work with a 6-position Mil-Spec or Commercial buffer tube. The MBA-3 features a 3-Axis Buttplate with Length-of-Pull adjustment as well as height and lateral adjustments, and an adjustable cheek rise in a low-cost, lightweight, strong and high-quality design.

The MBA-3 also features an anti-rattle set screw. The modular design of the MBA Buttstock allows you to configure your buttstock to your specific and personal needs. Includes a rail attachment for attaching a monopod. The MBA features multiple attachment points for a sling, including molded pockets that will accept Grovtec QD cups, sold separately


  • Fully Adjustable Carbine Buttstock assembly to mount to a carbine rifle (6-positions mil-spec or commercial tube) – This is our carbine stock
  • The MBA-3 requires a Carbine buffer tube, either Mil-Spec or Commercial. Please review the information provided in the Requirements tab. This stock works with both carbine Commercial and Mil-Spec tubes/assemblies.
  • Additional 1″ height on cheek rest
  • 3-axis Adjustable Butt Plate Assembly extends additional 1 1/16″ length of pull and includes the following movement:
  • Horizontal for linear adjustment (i.e. length of pull)
  • Vertical for a perfect butt plate fit into the curvature of the shoulder.
  • Lateral adjustment for a ½ inch left or right cast
  • This butt plate assembly is interchangeable with the original MBA-1 Buttstock
  • Includes a Picatinny Rail on the bottom rear of the Stock Body to attach your choice of many accessories.
  • Designed a flat bottom index set screw (10-24) to eliminate that constant rattle of carbine collapsible buttstock. This also allows you to secure the stock in your favorite position.
  • The MBA-3 comes with a medium soft rubber recoil pad, Duro 85.
  • The Luth-AR MBA-3 weighs roughly half that of comparable stocks coming in at just 18.5 ounces.
  • Fits all .223 and .308 AR carbine style rifles
  • Super Strong Glass Filled Nylon
  • Easy to replace and quick to install
  • Uses 4 out of the 6 positions on a mil-spec or commercial tube
  • If you require a butt stock that will utilize the first 2 holes of the buffer tube to fully collapse, you can remove the cheek rest from the MBA-3, or order an MBA-4, order an MBA-4 and a 3-axis buttplate or order an MBA-5 buttstock.

  • Buttstock Type: MBA-3
  • Application: Carbine
  • Caliber: .223, .308
  • Buttstock Weight: 19.2 oz
  • Extended Length of Pull: 15 5/8"
  • Collapsed Length of Pull: 11 11/16"
  • Overall Extended Length: 8 3/4"
  • Overall Collapsed Length: 7 11/16"
  • Cheek Rise: 1" Fully Extended
  • Additional Length-of-Pull: 1 1/16″

Accessories designed to work with this product.
Luth-AR SOFT 35 DURO 3-Axis Rubber Recoil Pad
Sale Price: $19.95

Luth-AR SOFT 35 DURO 3-Axis Rubber Recoil Pad

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