MBA-2 Rifle Buttstock with .308/7.62 Buffer Assembly


The MBA-2 fixed Rifle Buttstock Assembly is a complete kit that includes everything you need to assemble an A2 rifle buffer system on your .308/7.62 AR lower. The kit includes an MBA-2 Buttstock, a lightweight, affordable rifle buttstock. Comes complete with A2 Buttstock extension tube, Standard Buffer, and a .308/7.62 Buffer Spring. The modular design of the MBA Buttstock allows you to configure your buttstock to your specific and personal needs. The MBA features multiple attachment points for a sling, and has a rail attachment available. Available in Black or Flat Dark Earth.

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Package includes:

  • (1) “Skullaton” MBA-2 Modular Buttstock Assembly
  • (1) .308/7.62 Buttstock Extension Tube
  • (1) Standard .308/7.62 Buttstock Buffer Spring
  • (1) Standard Buffer Body Assembly – 5.3 oz

The “Skullaton®”

  • Strong and lightweight: .7lbs
  • Easy to Replace and quick to install
  • 21st century look
  • Ergonomic
  • Super Strong Glass Filled Nylon
  • Easy to add cheek plate or buttplate (adjustable Luth-AR accessories)


  • Buttstock assembly for the AR
  • Interchangeable with standard A2 or A1 buttstocks or any aftermarket buttstock with overall length of approximately 10.5″
  • Length: 10 3/8″
  • Sling swivels not included
  • Not interchangeable with carbine rifles with telescoping assemblies

Buffer Tube Assembly Kit contains:

  • (1) .308/7.62 Buttstock Extension Tube
  • (1) Standard .308/7.62 Buttstock Buffer Spring
  • (1) Standard Buffer Body Assembly – 5.3 oz

Installing .308/7.62 buffer system on a carbine may effect function.

SKU: MBA-2K308 — Black

SKU: MBA-2F308 — Flat Dark Earth

Additional information

Buttstock Type


Buffer Tube


Buffer Weight

5.3 oz


.308/7.62, .308, 7.62

Buttstock Weight

11.2 oz



Cheek Rise


Overall Length

10 3/8″

Additional Length-of-Pull


Available Colors

Black, Flat Dark Earth, Pink


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*Note although the MBA-1 Buttstock is shown in these videos, the information also pertains to the MBA-2 Buttstock.

Parts Schematic
The MBA-1 and MBA-2 Buttstocks require the use of an A2 Rifle buffer tube. Use the diagram below to determine if you currently have an A2 buffer tube. If you have a Carbine buffer tube you may want to look at the MBA-3, MBA-4 or MBA-5 buttstock. If you are ordering an MBA buttstock kit, the proper buffer tube is included.

The differences between an A2 Rifle Buffer Tube and a Carbine Buffer Tube.

All MBA Buttstocks are Sling Swivel Ready.

This means that the buttstocks have molded pockets that accept Grovtec Sling Swivel Cups for use with Quick Detach swivels. The Sling Swivels and cups are NOT included with the buttstocks and must be ordered separately. This is to keep the cost of the MBA buttstocks down. Not every customer needs sling swivels and including them would raise the price of the buttstocks. The sling swivels are available separately. See the videos below for installation instructions using the install kit, or using a 1/4″ Allen wrench.