• Strong and lightweight
  • Includes a bottom Picatinny rail on the bottom rear of the stock
  • Fits both Commercial and Mil-Spec carbine buffer tubes
  • Anti-Rattle Set Screw
  • Compatible with Luth-AR butt plate assembly and cheek plate assembly


  • Material: Glass Filled Nylon
  • Finish: Black
  • Weight: 9.9 oz.
  • Length: 7.5"
  • Height: 5.01"
  • Width: 1.44"


  • AR-15 and AR-10 with Mil-Spec or commercial carbine buffer tube


  • 1x LUTH-AR MBA 4 Carbine Stock
  • 1x Rubber Butt Pad (installed)


Luth-AR MBA-4



If you'd like an entry-level option to the brand-new MBA-3 buttstock just released by LUTH-AR, consider the Luth-AR MBA-4 collapsible stock. This stock is extremely ergonomic and easy to install, making it the ideal replacement for your current carbine stock. The unique design of the stock gives it a “tacticool” 21st century appeal that will not be found lacking on your rifle.

If at any time you want to take advantage of the functionality of the MBA-3, no problem! The Luth-AR MBA-4 is completely modular and can very easily be upgraded to the same look and functionality as the more expensive MBA-3 with the addition of a cheek riser and a butt plate. Compared to other adjustable buttstocks on the market, the MBA family by LUTH-AR is by far the most adjustable AR rifle stock available. This collapsible stock is also extremely lightweight at 10 ounces.

The glass-filled nylon used in the construction of this Luth-AR MBA-4 carbine buttstock enables it to withstand the most rigorous tactical operations with ease. New features include a bottom picatinny rail, and a set screw for rattle elimination. The stock will fit securely on most existing commercial and Mil-Spec buffer tubes for AR-15 type rifles. The product will also fit most .308 AR-style rifles.

When purchasing parts for your AR rifle, it is important to ensure that you are investing in a product of the highest possible quality. Your rifle will only be as reliable as the parts and accessories used with it. Be sure you purchase the best.

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