Hydraulic recoil buffer for Smith & Wesson M&P 10 .308 sku 811310?

[No Alibi]

Im looking for the best Hydraulic recoil buffer for my Smith & Wesson M&P 10 .308 sku 811310. The Enidine AR-10/.308 AR-Restor Hydraulic Recoil Buffer Full Stock is said to be the best. But my question is... will this work in this rifle?

info on this part is ...

Enidine AR-10/.308 AR-Restor Hydraulic Recoil Buffer Full Stock

Item#: EARR-10FS

AR-Restor Hydraulic .308 Full Stock Buffer. This buffer replaces buffers that are 5¼" long. This is the best buffer on the market today. It provides reduced felt recoil, improved accuracy, reduced fire rate, suppressed bold bounce and protects your valuable optics. The Enidine AR-Restor offers greatly enhanced performance through an easy-to-install drop-in replacement buffer in your fullstock .308. This buffer offers the same dependability and improvements that Enidine provided to US and NATO forces. The AR-Restor greatly reduces felt recoil and improves accuracy. By cushioning the rearward travel of the bolt carrier, the AR-Restor virtually eliminates muzzle rise allowing the operator faster, more accurate follow-up shots. For full-auto weapons, the AR-Restor slows the cyclic rate allowing the barrel to stay cooler and last longer. With the Enidine AR-Restor, achieve the full potential from your weapons system.

 

[apiccola]

I use the Enidine 308 rifle (full stock) buffer with a PRS stock in lieu of using the S&W recommended carbine buffer the adapting spacer combination for the A2 buffer extension tube.

The hydraulic capability of the buffer is a gimmick. The buffer actually reduces recoil by virtue of its weight ... 6 oz. Which is a good thing if the hydraulic component fails, the buffer operates as a regular buffer anyway. The buffer is approximately twice as heavy as the 2.95oz M&P10 OEM carbine buffer and also heavier than the popular AR variant carbine buffer specs H2 (4.6oz) and H3 (5.4oz). Keeping in mind that the M&P 10 ships with a 2.95oz buffer, other AR308 variants such as the LR308 spec a 3.4oz carbine buffer, AR10 specs 5.4oz (H3) carbine buffer, CAR10 specs 5.6oz carbine buffer and RRA308 specs a 5.6oz carbine buffer.

 

[No Alibi]

How long is the Buffer on my model rifle? I have not received it yet as I am getting this rifle next week. This replaces any Buffers 5 1/4" long. So my question is how long is my Buffer in this rifle? I would like to order it before the rifle arrives so I could slap a scope and bust out some rounds the same day. Thanks for your reply in advance. Hydraulic recoil buffer for Smith & Wesson M&P 10 .308 sku 811310?

 

[apiccola]

I believe a carbine buffer is 3.25" long.

 

[apiccola]

I use the Enidine carbine buffer in my M&P15-TS. That buffer replaces a 3.25" buffer and weighs 4.32oz ... which is still over 1.25oz heavier than the OEM carbine buffer in the MP10.

 

[No Alibi]

Thank you Apiccola. I did not know if they consider this rifle a Carbine or full? I'll double check and wait to buy just in case as I would like to use the full if possible. Now which scope do I put on this bad boy for Black Bear hunting in New York State? The Buffer site says the full will fit a full fixed S&W. So I think I'm going to wait to make sure as I hate returning items.

 

[No Alibi]

Here is the info on the rifle .....

Model M&P10 .308 WIN/ 7.62x51 (Compliant)
$1,619.00 *
*Suggested Retail, Dealer Sets Actual Pricing
SKU:811310
Model: M&P10
Calibers: .308 WIN/ 7.62x51
Action: Semi-Automatic
Capacity: 10 Rounds
Magazine Type: Metal
Barrel Length: 18" / 45.7 cm
Barrel Twist: 1 in 10" - 5R Rifling
Trigger Pull: 6.15 LBS. +/-
Overall Length: 36.9" / 93.7 cm Extended
Stock: Fixed
Weight: 7.71 LBS. / 3,497.3 g
Bolt Material: 9310 Steel
Barrel Material: 4140 Steel
Barrel Finish: Durable, Corrosion Resistant
Receiver Material: 7075 T6 Aluminum
Receiver Finish: Black Type III Hard Anodized
Chromed Components: Gas Key, Bolt Carrier, Firing Pin

 

[apiccola]

The "carbine" or "full" designation in this case refers to the type of buffer extension tube installed on the lower receiver. "Carbine" in this context means you have an M4 style adjustable stock, and "full" in this context means you have an A1/A2 style fixed stock.

 

[apiccola]

Looking at your build specs, you purchased a fixed stock MP10. If this is the case, and it has the A2 buffer tube, you can use the full stock buffer with the OEM spring.

 

[apiccola]

Just looked your model up, its the Compliance model which has a pinned carbine stock. You need the carbine buffer for this model. If you live in a state that does not require a fixed rifle stock, you can remove the plastic pin and adjust the stock as you like.

 

[No Alibi]

Thanks again Apiccola! This stuff and lingo is all new to me for AR talk. As I own a lever action and 12 ga this will be my 1st AR

 

[No Alibi]

So what your saying is when they pin the stock for "Compliance" they are obstructing me using the full sized 5 1/4" hydronic recoil buffer?

 

[apiccola]

No, the little pin keeps you from adjusting the stock to a shorter length in states like California which possibly prohibit adjustable and/or short stocks for whatever the reason. The pin is an inexpensive work-around of that legal situation, such that if you lived in California, you can own and use the rifle legally as long as that pin remains "permanently" affixed and not tampered with. However, if you move to Texas thereafter, you can legally remove the pin and use the adjustment feature of the stock.

The buttstock, whether carbine (adjustable) or rifle (fixed/non-adjustable) style, are fitted to the lower receiver on a tube referred to as the buffer extension tube. The buffer extension tube for a carbine stock is shorter than the buffer extension tube for a rifle stock. The buffer extension tube houses the buffer and buffer spring. The buffer and buffer spring work to stabilize, decelerate and return the bolt carrier back to battery at the barrel chamber each time the rifle is fired. In the firing process, the bolt carrier travels backward over the magazine and into the buffer extension tube. Then, on its return forward, the bolt pushes the next round out of the magazine and chambers it. If you install the longer rifle length buffer in the shorter carbine buffer extension tube, the bolt carrier will probably not travel backward far enough to scoop up the next round from the magazine when it pushes forward.

 

[BlindShot]

Thanks again Apiccola! This stuff and lingo is all new to me for AR talk. As I own a lever action and 12 ga this will be my 1st AR

Don't feel bad your not alone.

 

[No Alibi]

Full stock Buffer and not cycling properly?

You say below that the rifle will not cycle correctly? I hope your wrong as I purchased the full buffer as it said it was the best on the market. I don't think I'll have a issue but we will see, here is the info....

AR-Restor Hydraulic Rifle Buffer for M16/AR15 variants. This buffer replaces buffers that are 5 7/8" long. This is the best buffer on the market today. It provides reduced felt recoil, improved accuracy, reduced fire rate, and protects your valuable optics. The Enidine AR-Restor offers greatly enhanced performance through an easy-to-install drop-in replacement buffer in your fullstock AR15 and M16. This buffer offers the same dependability and improvements that Enidine provided to US and NATO forces. The AR-Restor greatly reduces felt recoil and improves accuracy. By cushioning the rearward travel of the bolt carrier, the AR-Restor virtually eliminates muzzle rise allowing the operator faster, more accurate follow-up shots. For full-auto weapons, the AR-Restor slows the cyclic rate allowing the barrel to stay cooler and last longer. With the Enidine AR-Restor, achieve the full potential from your weapons system.

Link is

Enidine AR-Restor Hydraulic Recoil Buffer Full Stock @ Buffer Technologies

********update!
I was just told if my current buffer is 3.25" while compressed I'm ok to use this but if it's 2.5 while compressed I will NOT be able to use this full sized hydraulic recoil buffer******





QUOTE=apiccola;137763738]No, the little pin keeps you from adjusting the stock to a shorter length in states like California which possibly prohibit adjustable and/or short stocks for whatever the reason. The pin is an inexpensive work-around of that legal situation, such that if you lived in California, you can own and use the rifle legally as long as that pin remains "permanently" affixed and not tampered with. However, if you move to Texas thereafter, you can legally remove the pin and use the adjustment feature of the stock.

The buttstock, whether carbine (adjustable) or rifle (fixed/non-adjustable) style, are fitted to the lower receiver on a tube referred to as the buffer extension tube. The buffer extension tube for a carbine stock is shorter than the buffer extension tube for a rifle stock. The buffer extension tube houses the buffer and buffer spring. The buffer and buffer spring work to stabilize, decelerate and return the bolt carrier back to battery at the barrel chamber each time the rifle is fired. In the firing process, the bolt carrier travels backward over the magazine and into the buffer extension tube. Then, on its return forward, the bolt pushes the next round out of the magazine and chambers it. If you install the longer rifle length buffer in the shorter carbine buffer extension tube, the bolt carrier will probably not travel backward far enough to scoop up the next round from the magazine when it pushes forward.[/QUOTE]

 

[No Alibi]

Current Buffer is 3.25" long so this buffer will work in my rifle. Good news as I already purchased it. There are a lot of people out there that is in the same situation. So the bottom line is if your current buffer that came with the rifle is 3.25" while compressed than it's ok but if it's 2.5" while compressed YOU CANNOT USE THE FULL SIZED HYDRAULIC RECOIL BUFFER. Thank you to everyone on this forum and BufferTech

 

[Maddmax]

Current Buffer is 3.25" long so this buffer will work in my rifle. Good news as I already purchased it. There are a lot of people out there that is in the same situation. So the bottom line is if your current buffer that came with the rifle is 3.25" while compressed than it's ok but if it's 2.5" while compressed YOU CANNOT USE THE FULL SIZED HYDRAULIC RECOIL BUFFER. Thank you to everyone on this forum and BufferTech

When you get it up and running give us an update on what you think about it.

 

[No Alibi]

Correction .....I received my the wrong buffer. Buffer Technologies had said that if my current was 3.25" long that the Full Stock would work fine. And if it was 2.5 it would not. Turns out I need KynSHOT AR.308 Collapsible Stock Precision Hydraulic Recoil Damper
Item#: KSRB5005
The KynSHOT hydraulic recoil damper reduces wear and tear, cuts down on shoulder fatigue, helps stay on target, and reduces muzzle rise. The AR.308 Collapsible Stock Buffer replaces buffers measuring 3.25 inches in .308 caliber rifles. The KynSHOT buffers are made of robust stainless steel and come with a manufacturer's 10 year/1 million round warranty for years of dependable service. Made in the USA.

KynSHOT AR.308 Collapsible Stock Precision Hydraulic Recoil Damper @ Buffer Technologies



So disregard the previous info

 

[LlindeX]

Exactly why are you buying a new buffer before you have even received or fired your new rifle? Are you confident that you're gonna need to replace the factory buffer? Even if you're gonna switch out the buttstock, the factory buffer/spring/tube will all work with your new stock. At most, you might need to buy the S&W 2" buffer adapter or a heavier buffer. Just sayin', changing out the buffer before you know how the factory rifle operates may create some cycling problems for you.

 

[ohbejuan]

I have the enidine ar-restor for the ar-10 and tried it for my M&P 10. Once installed, the bolt would not lock back nor would the rifle cycle properly using the OEM spring. I love the one for the M&P 15 but I wouldn't recommend it for the M&P 10