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MBA-3 Luth-AR MBA-3 Stock Assembly - Black

Manufacturer: Luth Ar
Manufacturer part number: MBA-3
UPC: 862388000122
Out of Stock - backorder and will be shipped once in stock.
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Buttstocks Feature:

  • Buttstock assembly to mount to a Carbine/Collapsable 6-position tube AR
  • Fits all .223 and most .308 AR style rifles
  • Easy to Replace and quick to install
  • It adds up to 1-inch of height on the cheek rest, and an additional 1-1/16 inch length of pull
  • Made of super strong glass-filled nylon, the Luth-AR MBA-3 weighs roughly half that of comparable stocks coming in at just 18 ounces.
  • 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.
  • 3-axis adjustable butt plate assembly keep in mind this butt plate assembly is interchangeable with the original MBA-1 Buttstock will have the following movement:Ergonomic
    1. Horizontal for linear adjustment i.e. length of pull
    2. Vertical for a perfect butt plate fit into the curvature of the shoulder.
    3. Lateral adjustment for a ½ inch left or right cast.
  • Adapts To Existing Commercial and Mil-Spec Buffer Tubes
  • Certain after Market Commercial Buffer Tubes that exceed  1.172″ may not fit
  • The vertical struts for the MBA 3 are fixed therefore the cheek pc is not reversible like the MBA 1 however the cheek pc itself is designed with a cheek pad for the lefty


  • Length of Pull LOP – Extended: 15 5/8″
  • Length of Pull LOP – Collapsed: 11 11/16″
  • Overall Length Extended: 8 3/4″
  • Overall Length Collapsed: 7 11/16″
  • Weight: 18.5 ounces

*Length of Pull Specs depend on Buffer Tube Hole Location/Position and 5 or 6 hole patter.

Compatible Buffer Assemblies:

  • .223 Mil-Spec Carbine Buffer Assembly 6-position Tube
  • .223 Commercial Carbine Buffer Assembly 6-position Tube
  • .308 Mil-Spec Carbine Buffer Assembly 6-position Tube
  • .308 Commercial Carbine Buffer Assembly 6-position Tube


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