Your can is an 07 baffle stack if it is the can you have the pic of. My dealer receiver both 07 and 08 cans in 08 that were ordered in 07... delivered at the same time. If you ordered a can in 07 but it was delivered in 08 you got what you paid for. If you bought an in stock 08 then you got an 07 can, not an 08. 08 cans have less backpressure, more baffles, and are quieter. 08 would not be an accurate description of your can even if it was delivered in 08.

THis one was ordered in summer of 08 and delivered in 08 from THE main AAC distributor PSI. It has the higher toothe high tooth count QD FH. I can see no reason that they would re-use '07 baffle stacks in 08 cans and risk backlash. I'll send this link over to the Silencertalk boards and see if Kevin or Rob can straighten it out.

quote:

Originally posted by 10X-Shooter:
THis one was ordered in summer of 08 and delivered in 08 from THE main AAC distributor PSI. It has the higher toothe high tooth count QD FH. I can see no reason that they would re-use '07 baffle stacks in 08 cans and risk backlash. I'll send this link over to the Silencertalk boards and see if Kevin or Rob can straighten it out.

Let me know what you find out since I have the same 51-tooth mount and an identical baffle stack.

You think Id waste my time making this shit up?

"Look into the rear and see if you see a special type of cone or a flat blast baffle. The 08 has a cone." RSilvers 4/08

In respose to an 08 baffle stack inquiry on the M4-2000...

"They are current production now." RSilvers 2/08



08 blast baffle



07 blast baffle

DevronL thank you for your gracious help on this.

I can speak for myself when I say that I was not doubting your information or pleasant demeanor. I just wanted to find out why I have a 07 baffle stack in a suppressor represented and sold as a 08. I am going to call AAC with the serial numbers on mine and ask why the difference in the baffle stacks.

"Front towards enemy", that tears it, I'm buying an AAC when I get ready to purchase.

That was exactly what I was wondering about. I appreciate your help and info but I don't get the attitude. I also simply wanted to have my facts correct and understand something. Sometimes it's easy to misunderstand things on the internet and I try to make sure I understand something correctly, which is exactly what I sought, clarification. I'm not sure if you humped the upset button because you thought I was calling you a liar (which I was not, I'd do that outright and in person if so), or if you thought it was a waste of your time to respond, or what. I was all happy, under the illusion that I had the latest and greatest that I paid for until your post and before I humped my upset button I wanted to go straight to the source. If that hurt your feelings, sorry 'bout that. I don't know you from adam. Thank you for the info. Again, I too thought I was getting a 2008 model and I guess I did "sort of" since it has the different tines but I thought I'd be getting what you described. I ordered somewhere between march and may so maybe I just got luck of the draw in baffle stack evolution. I guess that leaves me a little disappointed.

This message has been edited. Last edited by: 10X-Shooter,

Sorry about the attitude... it did seem like you were insinuating I was lying or didnt know what I was talking about. My dealer had SOME SPR/M4s come in as 07 designs and SOME as 08 designs... on the same day...in the same box... in August or September 08 I think.

quote:

Originally posted by dwm1918:
I have an LMT MRP upper with 10.5" barrel running a AAC M4 2007 suppressor and have very little blowback. Oh, I like the pinging noise!

That is the gun I plan to build when I get home! It looks as good as I imagined. I have the Form 1 sitting in the fire safe for the 10.5" SBR. The AAC M4-2k is in the other safe. Just need to order the LMT MRP upper and assemble.
Then it'll be time to put in the order and pony up to the ATF man for the M203... Damn this is an expensive hobby


What do you think of the setup, dwm1918?



Not to hijack the thread, I have the '07 M4-2k, I recognize the baffle from the pics. It does have some serious gas blowback, but I haven't taken any real steps to mitigate it yet. Dirties the hell out of the gun and the magazines.

I called AAC and was told that there is an intermediate design that they jokingly refer to 07.5. That is the one with the 51-tooth mount with the thumb release but the 07 baffle stack. It sounds like that is what 10X-shooter and I have hence our confusion. It also sounds like neither dealer understood the difference either.

Now I am curious about that link DevL reviewed regarding the 07 versus 08 baffle performance. As long as the decibel reduction is reasonably comparable I'll be pleased.

Other than first round pop I cant tell them apart from just listening. The first round pop of an 07 SPR/M4 makes my ear ring at 1m left of muzzle, but not at the shooting position. The 08 stack does not do this at 1m left. The measured difference is over 3db for continuous average fire but I find it hard to hear that diffference unless its the difference in pain/no pain or ringing/no ringing. It might be more noticable from the shooting position in more confined areas.

IMO barrel length, ammo slection, location all make a bigger difference in sound than 07 vs 08 baffle stack. Location makes the biggest difference. I get pain and ringing even in heavily wooded ares sometimes due to reflected sound with an 08 stack.

I like it a lot but I have a MRP piston upper with 12" barrel on order and I will move the 203 and suppressor over to that setup when it arrives. Only have to wait 16 to 20 weeks for delivery per LMT

quote:

Originally posted by bdavis:
I called AAC and was told that there is an intermediate design that they jokingly refer to 07.5. That is the one with the 51-tooth mount with the thumb release but the 07 baffle stack. It sounds like that is what 10X-shooter and I have hence our confusion. It also sounds like neither dealer understood the difference either.

06 and earlier were 18 tooth spin on/off, Phantom FH.

07 was ratchet mount (push button), 50 tooth, with baffle as mentioned by DevronL. First offered only with Phantom FHs, then with Blackout FHs.

08 was rathet mount (push button), 50 tooth, with baffle as mentioned by DevronL. Blackout only available with 08s, Phantoms phased out.

50 tooth Phantom or Blackout FHs are interchangeable on 07/08 M42Ks.

"Front towards enemy" shows up on the Claymore Antipersonnel Mine:

http://en.wikipedia.org/wiki/File:US_M18a1_claymore_mine.jpg

quote:

Originally posted by Renegade:

quote:

Originally posted by bdavis:
I called AAC and was told that there is an intermediate design that they jokingly refer to 07.5. That is the one with the 51-tooth mount with the thumb release but the 07 baffle stack. It sounds like that is what 10X-shooter and I have hence our confusion. It also sounds like neither dealer understood the difference either.

06 and earlier were 18 tooth spin on/off, Phantom FH.

07 was ratchet mount (push button), 50 tooth, with baffle as mentioned by DevronL. First offered only with Phantom FHs, then with Blackout FHs.

08 was rathet mount (push button), 50 tooth, with baffle as mentioned by DevronL. Blackout only available with 08s, Phantoms phased out.

50 tooth Phantom or Blackout FHs are interchangeable on 07/08 M42Ks.

Took me forever to understand that. I'll blame it on the medication rather than the education...

Darn...

I almost wish I hadn't seen this thread. I ordered an M42K 08 Model from PSI and it just transfered to my dealer...now I am wondering if I got the 07 baffle stack.

IMO, that is BS...if you buy an 08, you should get an 08 model. You don't get last years engine in this year's car.

They should put a notice out if they haven't already that there are 08 cans with 07 baffle stacks.

I hope my can has the 08 stack...

quote:

Originally posted by FedDC:
Darn...

I almost wish I hadn't seen this thread. I ordered an M42K 08 Model from PSI and it just transfered to my dealer...now I am wondering if I got the 07 baffle stack.

IMO, that is BS...if you buy an 08, you should get an 08 model. You don't get last years engine in this year's car.

They should put a notice out if they haven't already that there are 08 cans with 07 baffle stacks.

I hope my can has the 08 stack...

Yea me too. My can is at my dealer right now awaiting my paperwork to clear ATF.

quote:

Originally posted by bdavis:
I called AAC and was told that there is an intermediate design that they jokingly refer to 07.5. That is the one with the 51-tooth mount with the thumb release but the 07 baffle stack. It sounds like that is what 10X-shooter and I have hence our confusion. It also sounds like neither dealer understood the difference either.

If I were the author...and I might be depending on how my suppressor turns out, I would be seriously upset.

According to AAC, the 08 model was supposed to be a better can...more durable, quieter, more inconel, etc.

This can was sold as an "08" model can...no disclaimer, no warning, no notice...nothing. It was listed as a 2008 model and as such would have the 2008 parts.

It came with 2007 model internals...functionally, you paid for one thing and got another.

That would get me upset...more so when it is an NFA item that I have to live with forever.

I wouldn't mind a company using up old parts...but there should be a disclaimer or a notice...they shouldn't be sold as 08 models if they are not the 08 specs.

I'm not saying it is dishonest or false advertising...but it is headed on that slippery slope towards it.

AAC should upgrade the author's can to 08 specs like he paid for in the first place.

quote:

Originally posted by FedDC:

quote:

Originally posted by bdavis:
I called AAC and was told that there is an intermediate design that they jokingly refer to 07.5. That is the one with the 51-tooth mount with the thumb release but the 07 baffle stack. It sounds like that is what 10X-shooter and I have hence our confusion. It also sounds like neither dealer understood the difference either.

If I were the author...and I might be depending on how my suppressor turns out, I would be seriously upset.

According to AAC, the 08 model was supposed to be a better can...more durable, quieter, more inconel, etc.

This can was sold as an "08" model can...no disclaimer, no warning, no notice...nothing. It was listed as a 2008 model and as such would have the 2008 parts.

It came with 2007 model internals...functionally, you paid for one thing and got another.

That would get me upset...more so when it is an NFA item that I have to live with forever.

I wouldn't mind a company using up old parts...but there should be a disclaimer or a notice...they shouldn't be sold as 08 models if they are not the 08 specs.

I'm not saying it is dishonest or false advertising...but it is headed on that slippery slope towards it.

AAC should upgrade the author's can to 08 specs like he paid for in the first place.

I called AAC about just that and got nowhere. I understand that they are the manufacturer and have absolutely no knowledge of what transpired between the dealer and myself but it still irks me that externally it appeared to be an 08 version. At NO time have I ever known the 07 model to have the ratchet mount. Infact, when I called the AAC rep said if I had the ratchet mount I had an 08 model. I corrected that I understand that there was some sold with the 07 baffles in a 08 body and that is when I received the 07.5 story. Live and learn.

If anyone gets some satisfaction on this matter I would greatly appreciate it if they would let me know.

Thanks