Spikes ST-T2?

Building a rifle based on the AR-15 hardware?

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Spikes ST-T2?

Postby ididieselman » Tue Feb 03, 2015 6:10 pm

Hey ya'll finally working on my first build. I decided to ease my way into the building my own world and go easy does it. I bought a lower and lower parts from palmetto state armory. I got it put together easy my question is , is the Spikes ST-T2 heavy buffer all hype or does really do what they claim it does? I am not a Kool Aid drinker but I do like the idea of not hearing the weights shift inside the buffer and buffer tube. If anyone has any experience with these , I would appreciate some input. I also ordered the PSA 16" M4 premium with these specs and price couldnt say no . It states the barrel is made by FN. I always wanted a 1 in 7 barrel.
16" Barrel length
Chrome moly vanadium barrel
5.56 Nato Chamber
1 in 7" twist rate
Chrome-lined bore
HPT/MPI Barrel
M4 Feed ramps
F-Marked Front sight post
A2 Flash Hider
Sling Loop
Standard Hand Guards w/ heat shields
Forged upper receiver
T-Marks
M16 Bolt Carrier Group and Charging Handle


current progress
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Re: Spikes ST-T2?

Postby Globemaster » Tue Feb 03, 2015 10:18 pm

ididieselman wrote: Hey ya'll finally working on my first build. I decided to ease my way into the building my own world and go easy does it. I bought a lower and lower parts from palmetto state armory.

looks great, and it looks like you did okay for your ‘First-Build’

ididieselman wrote: I got it put together easy my question is , is the Spikes ST-T2 heavy buffer all hype or does really do what they claim it does? I am not a Kool Aid drinker but I do like the idea of not hearing the weights shift inside the buffer and buffer tube. If anyone has any experience with these, I would appreciate some input.

sorry, I don’t have any experience with this buffer.

ididieselman wrote: I also ordered the PSA 16" M4 premium with these specs and price couldn’t say no . It states the barrel is made by FN. I always wanted a 1 in 7 barrel.
16" Barrel length
Chrome moly vanadium barrel
5.56 Nato Chamber
1 in 7" twist rate
Chrome-lined bore
HPT/MPI Barrel
M4 Feed ramps
F-Marked Front sight post
A2 Flash Hider
Sling Loop
Standard Hand Guards w/ heat shields
Forged upper receiver
T-Marks
M16 Bolt Carrier Group and Charging Handle

sounds like a nice upper-halve too!


ididieselman wrote: current progress

looks great! :thumbs up:
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Re: Spikes ST-T2?

Postby Rattler » Wed Feb 04, 2015 6:58 am

Here's a better question: Why did you buy that particular Buffer?

Quickly followed by - What makes you think you need it?

Closing with - What do you expect it to do? Which can be reworded as - Why do you think having this buffer will improve your shooting experience?


I ask these not because I'm being a turd (although I confess i sometimes so... :thumbs up: ), but because whenever customers ask me questions like this in the normal course of business throughout the day, I'll frequently answer their question with another question: "When you are done with your build, what do you want to do with the rifle, and what type of performance do you think you need to accomplish that goal?

To me, everything must be done with a purpose,. otherwise its superfluous use of hyperbolic advertising that I do not want to become pray to. My income is hard earned and slow to come. When I spend money on something other than bills, medical insurance, car insurance, food clothes and other necessities or governmental requirements, because there is always so little left over, I need to make sure I'm buying with a purpose. No snake oil in my builds. Not saying this buffer is, just saying that I'd do a ton of research on it before I made the buy.
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Re: Spikes ST-T2?

Postby John A. » Wed Feb 04, 2015 3:52 pm

I have an H2 buffer in my SBR.

With that in mind, it is typically well known that many SBR length barrels are often gassed somewhat a little more than a standard carbine because of the less dwell of the shorter barrels.

In all of my other builds with standard (16 inches or more) length barrels, I have never needed a heavier buffer to cycle correctly. Nor do I think you really would either.

Many people tend to want the bolt to stay closed as long as possible upon firing to get the most velocity from the bullet as possible. Which the H2 buffer usually does, but it can also cause the gun to start getting finicky and not cycling as well too if it is even the least bit under gassed or heavily fouled.

I know many folks claim that PSA uppers are usually pretty good, but I found out the hard way that the midlength upper I got off of them just before Thanksgiving had an undersized gas port, and while I fixed it myself with no problems afterwards, it wouldn't even run with a standard buffer. I'm certain that adding a heavier buffer would have compounded the problem of it not locking into battery, short stroking, not locking the bolt back on an empty mag and throwing the brass at the 5 o'clock position over my sons right shoulder, etc.

From all of my internet research, I found that Sabre Defense 16" Midlengths shipped with .080"-.082" gas port, Spikes recommend going with .076"-.082", Model 1 Sales barrels are at 0.078", Wilson combat uses .085", Noveske uses .080" and Ranier is using .082".

Yet the PSA midlength started with .072" straight from them.



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Re: Spikes ST-T2?

Postby ididieselman » Wed Feb 04, 2015 4:37 pm

Thanks GM , and great insight john A , great question Rattler . I run my AR's hard all of them ! I qualify once a year and my coworkers and I are responsible for setting up training exercises every other weekend, were we average 500-600 rounds each time with rapid fire and precision shooting. I have never had an issue with the standard carbinebuffer. I will admit the rattle is only thing that bothers me but not a deal breaker . I bought the lower kit as a complete price was great reason I have the buffer I do . Just digging around the web I came across the spikes buffer and people raving about it . About the smooth cycle , less recoil its 5.56 really ? Lol and the no rattle . As I take all info on the web with a grain of salt , I continue my research by asking here for first hand experience. I value ya'lls opinion because just from being apart of this great community,my AR knowledge has made leaps and bounds . From when I was a newbie with my first PP . Which still runs like a champ with thousands of rounds thru it . Not bad for "entry" level carbine. Lol thanks again for help! :thumbs up:
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