Vltor A5 Receiver Extension, Spring and Buffer Kit on a MK12?

[rljatl]

I am considering putting a Vltor A5 Receiver Extension, Spring and Buffer Kit on a MK12 to mimic the recoil impulse of a rifle length system, since that is what the rifle was designed for. Would a SOPMOD stock fit on the Vltor A5? The receiver extension is supposed to be longer than a standard carbine extension. I assume that means it will not collapse down as far the Vltor A5. Correct? How much longer is it?

[Belmont31R]

With the SOPMOD closed as far as it will go you will have about an inch of exposed receiver extension.

[rljatl]

Thanks for the quick response. What is your opinion of putting the Vltor A5 on the MK12? Good idea or no?

[Belmont31R]

I am thinking of doing it. I just wish Vltor sold the tube, spring, and buffer as a kit by itself instead of buying the stock with it too. No need for one of their stocks and don't want to have to try to sell it.



I am running a UBR right now on my Mk12 clone thingy.

[rljatl]

You can buy the set up with out the stock, which is what i am going to do:

http://www.bravocompanyusa.com/Vltor-A5-Spring-and-Buffer-Kit-p/vltor%20v2-1070-a2.htm

http://www.bravocompanyusa.com/Vltor-A5-Receiver-Extension-Tube-p/vltor%20re-a5.htm

[Belmont31R]

Cool. Didn't know BCM was selling those.....:cool:

[markm]

The buffer/spring is out of stock but the RE is in stock. DAMN IT!

I'm not going to buy just one of the items and be stuck like a retard.:mad:

[justin_247]

The buffer/spring is out of stock but the RE is in stock. DAMN IT!

I'm not going to buy just one of the items and be stuck like a retard.:mad:

You can order it direct from VLTOR's online store, if you want...
http://www.vltorstore.com/products/A5-Spring-and-Buffer-Kit.html

[rljatl]

Thanks for the info. I am going to place an order.

[Dionysusigma]

Anyone have a pic of the SOPMOD stock on the A5 extension?

[MechEng]

Thanks for the quick response. What is your opinion of putting the Vltor A5 on the MK12? Good idea or no?

I would say Yes it's a good idea. I just installed one on a 18" Noveske with an intermediate length gas system. It has a very soft recoil impulse. If you are looking to use it on a Mk12 upper with a rifle length gas system it should work well.

[markm]

Anyone have a pic of the SOPMOD stock on the A5 extension?

Why would it look any different than any other RE? It would have more potential LOP, but other than that, it would look no different. :confused:

[markm]

You can order it direct from VLTOR's online store, if you want...
http://www.vltorstore.com/products/A5-Spring-and-Buffer-Kit.html

Awesome. I'm going to wait for pay day though.

[Dionysusigma]

Why would it look any different than any other RE? It would have more potential LOP, but other than that, it would look no different. :confused:

I'm wondering what it looks like with the extra LOP, and how it looks when it's as far in as it will go...

[m249saw]

Hmm might have to try that if the A2 doesnt work out.

I read somewhere that Crane didnt like the SOPMODS with carbine buffers on it due to bolt bounce.:confused:

[markm]

I'm wondering what it looks like with the extra LOP, and how it looks when it's as far in as it will go...

I see. I'd like to see how long it gets fully extended I guess.... although I can't imagine going longer than an A2 stock.

[DMR]

Hmm might have to try that if the A2 doesnt work out.

I read somewhere that Crane didnt like the SOPMODS with carbine buffers on it due to bolt bounce.:confused:
Correct, they had the problom on full auto as I understand it.

For M-16s they now have a collapsible buttstock kit using standard M-4 buttstock parts and a "H6" buffer. Never actualy seen one though as it's fairly new.

[eternal24k]

Anyone have a pic of the SOPMOD stock on the A5 extension?

Old pic showing the SOPMOD completely collapsed on the A5


http://i193.photobucket.com/albums/z152/eternal24k/008-10.jpg?t=1295487494

[eternal24k]

I see. I'd like to see how long it gets fully extended I guess.... although I can't imagine going longer than an A2 stock.

I will snap a quick photo tonight

[m249saw]

Hows this for an A2 alternative?

http://i5.photobucket.com/albums/y158/m249saw/Stck_2180-A-1024-Stick.jpg


http://militarytimes.com/blogs/gearscout/2011/01/19/efx-a1-stock-boring-name-interesting-stock/

[HeavyDuty]

Hows this for an A2 alternative?
http://militarytimes.com/blogs/gearscout/2011/01/19/efx-a1-stock-boring-name-interesting-stock/

Now *that's* interesting! I can see having one of these...

[ncturkey]

Good looking rifle. It looks like it just not close all the way to the receiver plate. I bet that is one smooth shooting rifles. Tell us a little more about your settup. Thanks
Old pic showing the SOPMOD completely collapsed on the A5


http://i193.photobucket.com/albums/z152/eternal24k/008-10.jpg?t=1295487494

[eternal24k]

Hows this for an A2 alternative?

http://i5.photobucket.com/albums/y158/m249saw/Stck_2180-A-1024-Stick.jpg


http://militarytimes.com/blogs/gearscout/2011/01/19/efx-a1-stock-boring-name-interesting-stock/

If that is A1 length i am interested, I have an A1 stock on my bench to mod a QD socket to, this might be the ticket.


Good looking rifle. It looks like it just not close all the way to the receiver plate. I bet that is one smooth shooting rifles. Tell us a little more about your settup. Thanks
Thanks
Its a great location since I never shoot with carbine stocks completely collapsed anyways, I am usually at the 2nd position, so this is about perfect. and to quote myself from last month on the build:


http://i193.photobucket.com/albums/z152/eternal24k/013-11.jpg?t=1293228372

Work in progress

http://i193.photobucket.com/albums/z152/eternal24k/008-10.jpg?t=1293229181

Specs:
14.5" DD Middy w/ pinned BattleComp
RIS II rail, chose this rail not only because I love the RIS, but instead of going 12" decided to keep a standard, this build has an identical 11.5" sister in progress, for training purpose I wanted the exact same realestate to work with.
Sabre lower, gf loved Thundercats
Troy Diamond Sight
Vltor A5
Magpul ASAP, as far as single points go, I love the MS2 and the ASAP more

the other parts were in the bin.
Coming: MIAD, DD front sight, X300, and I have an Aimpoint M3 in a Bobro I might move over

currently have the X300 and DD front sight, planning on swapping the Bobro for the 180 (1/3 cowitness)

[eternal24k]

A2: 10 3/4"
SOPMOD/A5: just shy of 12"

http://i193.photobucket.com/albums/z152/eternal24k/009-9.jpg?t=1295494194

[m249saw]

Looks promising to say the least

[Boomer10]

With the SOPMOD closed as far as it will go you will have about an inch of exposed receiver extension.

They also have the A5SR. It's only a 6 position stock, but it's a little shorter so you can use other milspec stocks collapsed without any part of the receiver extension sticking out of the back.

http://www.vltorstore.com/products/RE%252d10%7B47%7DA5SR%3A-AR10-%7B47%7D-A5-Short-Rail-Receiver-Extension.html

[Todd.K]

They also have the A5SR. It's only a 6 position stock, but it's a little shorter so you can use other milspec stocks collapsed without any part of the receiver extension sticking out of the back.

Incorrect. The Short Rail is the section on the bottom the stock latch engages in, the RE is still longer to fit the A5 buffer. The A5SR has "normal" latch points (for a standard length collapsible stock) but they are all pushed back 3/4". The A5 RE will have one latch point forward of the A5SR that is only used with a longer stock like the Emod.

"Physically, the A5SR tube is slightly longer than a traditional AR-15 receiver extension tube and is functionally the same length as the AR-10 receiver extension tube."

[Dionysusigma]

The A5 RE will have one latch point forward of the A5SR that is only used with a longer stock like the Emod.

Like the MagPul ACS?

[vicious_cb]

Anyone try this with a CTR stock yet? Can you do a mortar drill without breaking the stock?

[Todd.K]

The CTR will collapse all the way on the A5 RE, it just stops 3/4" from the castle nut.

The Emod and ACS fully collapse.

[Boomer10]

Incorrect. The Short Rail is the section on the bottom the stock latch engages in, the RE is still longer to fit the A5 buffer. The A5SR has "normal" latch points (for a standard length collapsible stock) but they are all pushed back 3/4". The A5 RE will have one latch point forward of the A5SR that is only used with a longer stock like the Emod.

"Physically, the A5SR tube is slightly longer than a traditional AR-15 receiver extension tube and is functionally the same length as the AR-10 receiver extension tube."

Todd - I believe you misread what I posted (and I know I could've written it better). What I meant to say was the A5SR was shorter than the A5 RE, not that it was shorter than a standard RE.

[eternal24k]

Todd - I believe you misread what I posted (and I know I could've written it better). What I meant to say was the A5SR was shorter than the A5 RE, not that it was shorter than a standard RE.

I do not think this is correct.

My understanding is that the AR-10, A5, and A5SR all have the same overall length, just different placement of the locking positions. I think that is what Todd was getting at.

[Todd.K]

The A5 and RE-10 are the same length, I've held both at the same time. The A5SR is a renamed RE-10 so it is the same length as the the A5.

[rljatl]

So, should I get the A5 or the A5SR to use with a SOPMOD on a MK12?

[eternal24k]

So, should I get the A5 or the A5SR to use with a SOPMOD on a MK12?

for that application i think you will be happy with either, the differences only come into play with the stock completely collapsed. Both of them are going to be around 1" from the receiver.

[Todd.K]

Both will work just fine.

[vicious_cb]

Thanks Todd, I wonder if anyone is using the Tactical Springs CS rifle spring in their A5's. I believe these are standard power springs and should pretty much have the same functionality of a regular USGI spring but you never know.

[K.L. Davis]

Todd is right on with this... the A5 (7 position) tube is designed to work with the EMOD or simular longer stocks - the "Short Rail" (6 position) is essentially the same tube, but the lock pin holes are located so that a standard M4 type stock will work without the tube sticking out of the back in the shortest position.

[dorchester]

I've been very interested in this since I first heard of it. The A5 tubes have not been available from VLTOR since they "re-named" them. From my readings here it appears the tube should have the same length as the AR-10 carbine extension, so... could we use an Armalite brand carbine tube? I've got the buffer coming in the mail from Bravo Company but if the nicer VLTOR forged RE never shows up for sale I would like to have a way to make it work...

[M90A1]

Deleted for the sake of the forum.

[87GN]

:):):D

[dorchester]

My original question considered that the Vltor A5 tube has been "out of stock" for quite a while now. I wondered if the the Armalite brand AR-10 carbine tube was functionally the same length as the Vltor A5 tube. Just in case the A5 tube remains "vaporware". That's the point.

[87GN]

;):):)

[dorchester]

87GN, you are the man. I never thought to look around for RE-10 tubes lying around in stock elsewhere than Vltor. Problem solved.

[M90A1]

Deleted for the sake of the forum.

[87GN]

:):):o

[M90A1]

Deleted for the sake of the forum.

[87GN]

:):O:)

[M90A1]

Deleted for the sake of the forum.

[Atmosphere]

If anyone is interested, you can call Vltor and order the A5 RE now (at least, I called and ordered one Monday the 31st). At the time they told me it wasn't up on the web store, but I could call and buy it.

Spring and buffer were bought from Bravo Company, I received those today and am waiting on the tube.

[HeavyDuty]

Yup - I ordered the A5 RE and buffer kit from Vltor by phone, it showed up yesterday.

[M90A1]

Deleted for the sake of the forum.

[87GN]

:o:):)

[Evil Bert]

who else besides BCM and VLTOR are selling the A5 system?

[M90A1]

Deleted for the sake of the forum.

[87GN]

:);):)

[M90A1]

Deleted for the sake of the forum.

[87GN]

:):):):o

[M90A1]

Deleted for the sake of the forum.

[87GN]

:):):):):):)

[porider]

who else besides BCM and VLTOR are selling the A5 system?

I know I'm resurrecting an old thread but my quest to find the A5 6-position Receiver Extension (RE-10 / A5SR) landed me on Gun Broker to a company called AlphaOps. They've got a website too and the prices there are a little cheaper and they had free shipping on orders of $199 or more.

Snagged the A5 Buffer, Spring and buffer kit with some Rev m. windowed Pmags to get to the $199 for free shipping and was here at my door within a few days.

Now I've never heard of these guys and can only attest to my recent purchase with them, but the shipment was fast and the checkout process was easy. They seem to only carry just the Buzz word items so they do not have a lot of selection but they did have enough good items to pad my cart to get to the $199 for free shipping.

Link = http://www.alphaops.com

[nolt]

nm.

apologies for old thread bump. =\
my mistake.

[Alaska3006]

I run a vltor A5 extension with A5 buffer and Tubbs Flat Wire CS spring on my MK 12 with LMT SOPMOD stock......sweet

[cwgibson]

I know I'm resurrecting an old thread but my quest to find the A5 6-position Receiver Extension (RE-10 / A5SR) landed me on Gun Broker to a company called AlphaOps. They've got a website too and the prices there are a little cheaper and they had free shipping on orders of $199 or more.

Snagged the A5 Buffer, Spring and buffer kit with some Rev m. windowed Pmags to get to the $199 for free shipping and was here at my door within a few days.

Now I've never heard of these guys and can only attest to my recent purchase with them, but the shipment was fast and the checkout process was easy. They seem to only carry just the Buzz word items so they do not have a lot of selection but they did have enough good items to pad my cart to get to the $199 for free shipping.

Link = http://www.alphaops.com

I agree, I got mine from these guys. Fast shipping indeed.


Sent from my iPad using Tapatalk HD

[Alaska3006]

I have the Vltor A5 on a MK 12 mod 0 the extra length on the extension is nice you can run a rifle length buffer spring. I have long arms and the number 6 setting is all I use. so the extra length ( No 7 Setting) of the extension is wasted for me. But the A5 buffer is about the same weight as the standard A2 Rifle buffer. The Vltor A5 stock is a little heavier than the SOPMOD LMT stock......so the rear of the weapon is a little butt heavy. I replaced the standard rifle buffer spring with the Tubbs Flat Wire buffer spring.......very nice. I use a M16 Carrier group for the extra weight. Recoil/rise is less with this setup shooting off Bipods......makes a super accurate system.

I think the A5 system uses the 7 postion extension only.....and you have to use the A5 buffers with it and rifle buffer spring.
The Vltor 5 or 6 postion extension uses standard M4 carbine springs and carbine buffers H, H2, H3 or H6.

[Onyx Z]

I think the A5 system uses the 7 postion extension only.....and you have to use the A5 buffers with it and rifle buffer spring.
The Vltor 6 postion extension uses standard M4 carbine springs and buffers.


The A5 system has (or had) options for both 6 and 7-position buffer tubes. The 6-position tubes are very hard to find so they may be out of production.

I have the A5 system with the A5H2 buffer on my Mk12-ish rifle and it functions flawlessly and smooth.

[MistWolf]

I just bought a 6 position A5 RE from Rainier Arms a couple of weeks ago

[lawusmc0844]

https://dsgarms.com/vlre-10a5sr

Ordered mine from here a few months ago, and they're currently in stock

[M90A1]

You can also use a buffer tube from a RRA LAR-308 to get a six position tube.