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Luth-AR MBA-3 Carbine Stock AR15 AR-15 Collapsible AR10
Luth-AR MBA-3 Carbine Stock AR15 AR-15 Collapsible AR10

Luth-AR MBA-3 Carbine Stock AR15 AR-15 Collapsible AR10

Part Number:Luth-AR-MBA-3
On sale: $129.95
Retail Price:$159.95
You Save:$30.00(19%)
In Stock.

Choose Options

1.25" Quick Detach QD Sling Swivel and Mount [+$22.50]
5.56 Milspec 6 Position Tube Kit [+$29.95]
.308 Milspec 6 Position Tube Kit [+$35.95]
9MM Milspec 6 Position Tube Kit [+$48.95]
5.56 VLTOR RE-A5 Milspec Tube Kit [+$92.95]

Luth-AR MBA-3 Carbine Stock Collapsible fits AR10 or AR15 Milspec & Commercial

Stocking MBA-3-Black and MBA-3 FDE

MBA-3 Carbine Buttstock
Average review: 4.67 out of 5

Product Description

Fully Adjustable Carbine Buttstock assembly to mount to a carbine rifle (6-positions mil-spec or commercial tube) – This is our carbine stock. 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:

  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

This Luthar MBA3 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 such as our Accushot Monopod. Designed a flat bottom index set screw (10-24) to eliminate that constant rattle of carbine collapsible buttstocks. This also allows you to secure the stock in your favorite position. Comes with hard butt plate as a pad. A medium hard rubber recoil pad is available for additional purchase. The Luth-AR MBA-3 weighs roughly half that of comparable stocks coming in at just 18.5 ounces.

  • Fits all .223 and most .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


  • Ergonomic
  • 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 piece is not reversible like the MBA 1 however the cheek piece itself is designed with a cheek pad for the lefty
  • NOT interchangeable with A2 standard FIXED buffer tube. You will need to purchase a MBA-1 or MBA-2 to fit the A2 tubes.

Compatible Buffer Assemblies:

  • .223 Mil-Spec Carbine Buffer Assembly
  • .223 Commercial Carbine Buffer Assembly
  • .308 Mil-Spec Carbine Buffer Assembly
  • .308 Commercial Carbine Buffer Assembly

Additional Information

It does not include the following, but can be purchased separately:

  • Medium hard rubber recoil pad
  • Sling Swivels
  • Carbine Buffer Tube Kit (Milspec tube, buffer, spring, castle nut, locking plate) in AR15 or AR10 sizes
  • Carbine Buffer Body

Installation Notes:  

When tightening the anti rattle set screw, be careful not to over tighten as it may cause the threaded insert to separate from the plastic stock body. When sliding on 6-position tube, the lock pin has a notch in the head of the lock pin that will line up with the stock body. This needs to be lined up before sliding on the tube. The tube will slide on easily without resistance. If there is any resistance, that lock pin is not in its place.

Customer Reviews

5 Stars
Great Stock
This stock is as advertised. Fit was perfect. The stock has helped my accuracy with my self built 308 sniper rifle. Spoke to owner about delivery and he was very friendly and accommodating. Price was the best on the net by far. This business is now my goto for all my 308 needs.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Yardley PA. on 5/22/2021

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