H-Buffer for M&P's

[amac]

Was considering an H-Buffer for my M&P. I realize the recoil is already minimal, but less may yet be better. Has anyone installed an H-Buffer on their M&P? Which one did you get and have you had any issues since install? Thanks

 

[Glock19926]

buffers

I've ordered a Spike's Tactical ST-T2 buffer for my MP-15. You can read about it here

“Oh” AR-15 Products Vuurwapen Blog

It will arrive tomorrow and sometime next week, after a range visit, I will post about it here.

 

[Glock19926]

new Buffer

My impressions of changing the carbine buffer in the M&P-15 to a Spike's Tactical ST-T2 buffer:

a) There is a lot less noise in the receiver extension/buffer tube (no weights to bounce around inside the buffer)

b) The recoil impulse is smoother (again, because of powdered metal rather than separate weights in the buffer, as well as the greater mass of the buffer compared to the original)

c) The felt recoil is a smidgen (a highly precise measure of quantity) less than the original buffer

Items (a) and (b) are quite significant changes; (c) is just noticeable but not as big a change as (a) and (b)

To see the effect of different buffers in slow motion (cool video) go to Carbine/H/H2/Rifle Buffers Compared at

Carbine/H/H2/Rifle Buffers Compared Vuurwapen Blog

 

[Glock19926]

More on heavy buffers

from Defense Review article

" A benefit of the additional spring/buffer weight is that it slows down the unlocking and extracting tempo, increasing the locked chamber dwell time and allowing for much more reliable extraction and ejection. This is because the longer dwell time allows the chamber pressure to recede more, as well as transferring heat from the case to the chamber walls. It also offers a softer-shooting rifle because the recoil impulse is transmitted over a longer period of time, hence lower ft-lbs/second received at the shoulder."

The Big M4 Myth: “Fouling caused by the direct impingement gas system makes the M4/M4A1 Carbine unreliable.”

 

[Sammy]

I have changed out to a H buffer in my M&P15 and small difference in percieved recoil. Big difference is where the brass is landing due to the slowed action. Thinking about trying a H2 or the T2.

 

[amd6547]

I have a home made shorty AR. After reading many positive comments, I tried a 9mm buffer. I noticed a definate smoother recoil impulse, and the empties are dropped at my side.
Have not noticed any negatives after a couple hundred rounds.
However...My favorite set up for my shorty is to replace the CAR style stock with an M16A1 fixed stock...with rifle buffer. I just find the shorter M16A1 (as opposed to A2) stock fits me perfectly, and the weapon handles very well set up this way. The collapsable stock is great for storage or use with body armour or thick clothing or changing LOP for different shooters, but the fixed stock is better for shooting...for me.

 

[fivefourfiveX39]

spikes tactical heavy buffer

1. how is the overall quality of the product?
2. how is the overall accuracy of the weapon with the new product? same or different.
3. does it provide better lockup.

 

[BritDan]

1. how is the overall quality of the product?
2. how is the overall accuracy of the weapon with the new product? same or different.
3. does it provide better lockup.

I run my M&P15T with the spikes buffer and a Sprinco extra power CS spring. Very smooth compared to stock. Doesn't affect accuracy, but the less perceived recoil helps with follow on shots. Quality of Spikes buffer is great.

The M&P15 is overgassed as they come from the factory with an oversize gas port. .070-.075 vs USGI specced .062.

I'd recommend the upgrade to everyone for a bit softer shooting rifle while still retaining 100% reliability.

 

[fivefourfiveX39]

NICE!!!!!!!!

nice brother, you know were i can get a sprinco spring at i have been looking for one but no luck at any sites. would the flat or round spring be better im not decided yet, i know the flat spring is longer but round one is standard size! any input?

 

[Deaj]

1. how is the overall quality of the product?
2. how is the overall accuracy of the weapon with the new product? same or different.
3. does it provide better lockup.

I've been running a Spike's ST-T2 buffer in my M&P15T for more than 6 months and well over 1,000 rounds and here's my take:

1. Quality of the product is very high. Machining , finish, etched markings - all show a high degree of attention to detail. Weight is a bit heavier than a standard H buffer but not quite as heavy as a H2. Functions flawlessly and, as mentioned in an earlier post, it's quiet in cycling due to the lack of reciprocating weights. Concept seems similar to a dead-blow type hammer. My M&P15T cycles a bit smoother, quieter, and perceived recoil impulse is reduced slightly.

2. There has been no change in the inherent accuracy of the weapon as a result of this product. This said the heavier buffer in combination with a BCE Battle Comp muzzle brake has shaved time off follow-up shots by smoothing / reducing recoil impulse (as perceived) and practically eliminating muzzle rise. The Spike's buffer plays only a small part in this improvement but it's not insignificant IMO. Accuracy on quick follow-up shots under stress has improved and the ST-T2 buffer has played a role in this improvement.

3. I can't say. I can tell you that my M&P15T cycles everything I feed it flawlessly.

Hope this is helpful.

 

[fivefourfiveX39]

NICE!!!!

well that sounds pretty good from what you describe thanks for taking the time to reply. do you know were i can get a sprinco spring for a good price?......hey if you want to check my videos on my youtube account, type in fivefourfiveX39 in the search bar to look at my videos.

 

[fivefourfiveX39]

GO HERE FOR EDUCATIONAL VIDEOS!!!!!!!

go to youtube.com/fivefourfiveX39

 

[BritDan]

well that sounds pretty good from what you describe thanks for taking the time to reply. do you know were i can get a sprinco spring for a good price?......hey if you want to check my videos on my youtube account, type in fivefourfiveX39 in the search bar to look at my videos.

Tactical Springs & Machine Gunners Lube - part number 25004 (Red) is the one I have in my M&P15T.