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9 of 9 Items
  • Adjustable Carbine Stock & Buffer Tube Assembly Adjustable Carbine Stock & Buffer Tube Assembly Adjustable Carbine Stock & Buffer Tube Assembly Adjustable Carbine Stock & Buffer Tube Assembly

    Adjustable Carbine Stock & Buffer Tube Assembly

    This butt stock kit includes both an adjustable carbine stock and buffer tube assembly. The adjustable carbine stock is constructed from a durable polymer composite and is designed for quick adjustment. Additionally, this carbine butt stock offers three...

    $39.99
  • Magpul® MOE® Carbine Stock & Buffer Tube Assembly Magpul® MOE® Carbine Stock & Buffer Tube Assembly 2 Magpul® MOE® Carbine Stock & Buffer Tube Assembly 3 Magpul® MOE® Carbine Stock & Buffer Tube Assembly 4 Magpul® MOE® Carbine Stock & Buffer Tube Assembly 5

    Magpul® MOE® Carbine Stock & Buffer Tube Assembly

    Get all the pieces you need to finish off the shoulder end of your AR in one handy little package. This bundle we've created gets you our buffer tube assembly, but that's not all. The bonus is that we've included a Magpul® MOE® Carbine Stock...

    $69.99
  • AR15 Enhanced Carbine Buffer Kit by Aero Precision AR15 Enhanced Carbine Buffer Kit by Aero Precision AR15 Enhanced Carbine Buffer Kit by Aero Precision

    AR15 Enhanced Carbine Buffer Kit by Aero Precision

    You already know you need a buffer tube assembly on your AR-15. And usually it's nothing "special." You screw parts onto other parts, and it serves its purpose as part of your AR. You spend your hard-earned money on these parts, so it'd be great if...

    $70.99
  • LR-308/AR-10 Buffer Tube Assembly

    LR-308/AR-10 Buffer Tube Assembly

    If your in the market for buffer tube assembly kit, get yourself a kit that will guarantee longevity. Forged form 7075-T6 aluminum, the buffer tube is not only lightweight, but is extremely durable as well. It's also compatible with most aftermarket...

    $39.99
  • 300 Blackout Pistol Buffer Tube Kit - 3 oz Buffer

    300 Blackout Pistol Buffer Tube Kit - 3 oz Buffer

    Finish your 300 BLK AR build with the right buffer. Getting supersonic and subsonic 300 Blackout loads to reliably cycle in your AR pistol requires dialing in your gas system and your buffer weight. This lightweight buffer kit includes a 3.0-ounce...

    $34.99
  • AR9 Buffer Tube Assembly

    AR9 Buffer Tube Assembly

    Whether you're replacing an old part or getting started on a brand new build, we've got you covered with the AR9 buffer tube assembly kit. The buffer tube is forged from 7075-T6 aluminum which makes it very light and tough as hell. It's even compatible...

    $44.99
  • AR-9 Pistol Buffer Tube Kit - 5.4oz (9mm) Buffer

    AR-9 Pistol Buffer Tube Kit - 5.4oz (9mm) Buffer

    Reduce recoil and dial in your AR-9 build the right way. The 9mm cartridge utilizes blowback functionality to cycle in the AR platform. That means no gas system's required. But that also means the recoil impulse -- and the energy imparted on the bolt...

    $34.99
9 of 9 Items

Mil-spec buffer tube assemblies for all AR platforms available.

The buffer assembly is required for completing your AR-type rifle or pistol lower. Whether you built an 80 percent receiver or grabbed a stripped lower from an FFL, all buffer assemblies and tubes listed are compatible! That includes 9mm, 5.56, .223, .308, 6.5 builds, and 300 BLK. Each buffer tube we sell is manufactured in the U.S.A from forged (7075-T6) aluminum, and finished with the tried-n-true Type III Hardcoat anodized finish that matches your upper and lower.

 

Commercial vs. mil-spec buffer tubes explained.

What's Included With Each Buffer Kit

Each buffer tube kit includes all the parts required for installing and completing your lower assembly, with optional stocks and pistol braces available depending on your AR's configuration:

  • Mil-spec threaded buffer tube
  • Mil-spec threaded castle nut
  • Standard receiver latch plate
  • Carbine 3.0-ounce buffer (5.56, .223, 6.5 Grendel, and 300 BLK) 
  • or... Heavy / "H" 3.8-ounce buffer (.308, 6.5 Creedmoor)

Want a Sling? Grab an Upgraded Latch Plate

The latch plate, located at the rear of the lower receiver and underneath the buffer tube, is the perfect place for installing a single-point or two-point sling. This location provides an easy transition between the low- and high-ready positions for a shooter in any stance, and it allows your AR to hand vertically at your chest and waist when not carried. Grab the awesome-but-affordable QD plate from Sylvan Arms, and pair it with any QD swivel sling for a comfortable and convenient carry solution.

"How do I install my buffer assembly?"

It's easy! You'll need an Armorer's Wrench to properly tighten your buffer tube via the castle nut. Grab an Armorer's Wrench here. Next, check out our guide that shows how to install your lower parts kit. The buffer installation is part of this process and it only takes a few minutes. 


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