Spike's Tactical 6-Position MIL-SPEC Buffer Tube Assembly

Manufactured by Spike's Tactical
Manufactured by Spike's Tactical
104 Reviews

In Stock

Standard orders will ship out 2 business days if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The Spike's Tactical carbine buffer assembly kit is just what you need to finish off your lower with quality components. The Spike's Tactical Carbine Buffer Tube is a MIL-SPEC, 6-position tube, with dry lube film for improved reliability and reduced wear! It also features laser engraved positions marking each stop along its length.
Kit Includes:
  • 6-position MIL-SPEC buffer tube.
  • Latch plate.
  • Castle nut.
  • 17-7 stainless steel buffer spring.
  • Spike’s Tactical ST-T2 Heavy Buffer.
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BrandSpike's Tactical
Buffer3.25 Carbine - ST-T2 4.00 oz
TypeStock Hardware Kit

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

104 reviews


Spike's buffer tube kit


This is my second Spike's buffer tube kit. The fit and finish are perfect. The dry lube film inside removes the boing sound during shooting. The STT2 buffer times nicely with the midlength gas system. Very aesthetically pleasing. Will purchase another from Primary Arms for next build.

Spike's Buffer Tube


This kit is a lot nicer than the run of the mill buffer tube kit and you get Spike's heavy buffer with the kit! Primary Arms has the best price on the interwebz for it!

Great product


Typical Spikes excellent quality. Numbered position increments that pairs well with the window in the B5 Bravo stock.

Great product. Best buffer.


Used this for my recent Spike's build along with a B5 Systems SOPMOD Enhanced stock. This is my new favorite set-up. Everything fits nice and tight with no movement. Tube is marked and a hole on top of stock allows you to easily see the position number. ST-T2 buffer is the best for any AR and awesome for pistons. As always with PA, lighting fast shipping too!

Very Good Performance


Very good performance, and pricing.



Very smooth able to shoot all day

I wish everyone offered service this good.


When building my AR15 lower, I made my list, did my research, and started ordering. My only mistake was that the Spikes T2 buffer kit was the only thing I purchased through Primary Arms. Out of the orders I made within minutes of each other, Primary Arms had my order to my door the quickest, and without any hassle. Two of my other three orders through other vendors were incorrect. Like I said... I wish everyone had service like Primary Arms. Thanks guys. You will definitely be my go to place for future AR15 parts.

Just ok


When calling in to get assistance. The operator on the phone was rude. I made 2 separate purchases wishing a few weeks. Had to call to check shipping on one and the guy I talked to was an asshole. It's sad because I was going to use you guys exclusively for my SBR build. Now looks like I'm going to go back to Brownells. Y'all were referred to me by a friend. I will be letting him know about my experience as well.



You guys are fast and accurate everything works great got package in two days thanks a lot

As Promised


Buffer tube showed up quick and as expected. I have not installed yet so can't give any more of a review other than so far so good.... 4 stars only as nothing is perfect and you must always strive to be/do better