Suppressors any experiance with the SAS QD system?

[Goin'Hot]

I saw their 1/4 turn QD attachment on their site and it "looks" interesting. I currently have an older 18 tooth AAC 7.62 SD that's been returned for a fresh set of springs. My AAC has a spotty lock up on a couple of my mounts so, I'm looking at alternatives.

I've heard a direct thread Arbiter and the noise reduction and tone is impressive. I was originally going to go with one of their over the brake mounts because the can attaches with a standard fine thread and has a beveled locking surface.

I'd like to stick with a brake mount system of some sort because I still like to shoot with a brake and hunting with a can in Ohio is a no no.

 

[onechance]

Re: any experiance with the SAS QD system?

I've got 9 SAS cans of which 5 are QD. I've been pleased with them so far. Tim makes excellent products.

 

[Goin'Hot]

Re: any experiance with the SAS QD system?

Thanks. Is there anything that keeps the can from backing off? It just looks like a simple 1/4 turn with no "latch".

 

[onechance]

Re: any experiance with the SAS QD system?

I've not had any problems, but I always check my suppressors QD or screw-on for loosening.

 

[BLANKSGUNS]

Re: any experiance with the SAS QD system?

I have been working with Tim on these from the beginning of the latest QD systems, with thousands of rounds down range and several years now. They all require basically a "burn in" time of about 10rds to burn out any residual oils/debris and seat the can to your muzzle brake(s). Once this is done and you properly set the QD sector to your host weapon, install, shoot and they tend to tighten due to design. One nice feature on this design is that it can be reset to several different host platforms and installed for universal QD operations without issue or the use of springs, detents or levers. Its not a dummy proof design by fault for sure but truly a simple and once you have worked with it a few times, it comes second nature. As mentioned above, yes I always periodically check cans to ensure they have not backed off tension, a good habit to adhere to.

 

[Goin'Hot]

Re: any experiance with the SAS QD system?

So, between the 2 systems, over the brake mount and their QD system, is one inherently more accurate or less prone to poi shift when changing hosts?

The over the brake mount seems like it would be secure with the finer threads and the beveled contact @ the rear. I guess I don't understand the mechanics behind the QD mount and don't have one here to fondle.

 

[onechance]

Re: any experiance with the SAS QD system?

Usually an over the brake or screw on is more stable/secure than a QD. POI issues could be the cause of many things such as, threading of the barrel and can, ammunition. Sometimes you can have problems just with a can being too heavy on a smaller dia. barrel. I had a TRG-42 that had serious POI issues no matter what can was on it or corrections that were made. Let me also state that, "This is my opinion and experience". They may not be what others believe or true to all situations.

 

[wgsp]

Re: any experiance with the SAS QD system?

Goin' Hot, don't forget to tell SAS they should send me a commission since its my SAS can that you fell in love with.

 

[Goin'Hot]

Re: any experiance with the SAS QD system?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: onechance</div><div class="ubbcode-body">Usually an over the brake or screw on is more stable/secure than a QD. POI issues could be the cause of many things such as, threading of the barrel and can, ammunition. Sometimes you can have problems just with a can being too heavy on a smaller dia. barrel. </div></div>

I guess I should have said repeatability issue. My 18Tooth AAC has a problem holding the same poi when I remove and replace the can on the same rifle.

 

[BLANKSGUNS]

Re: any experiance with the SAS QD system?

Well the "Standard" muzzle brake offering works extremely well as does the "QD" muzzle brake option. Either or, I run both and have seen about the same minimal to less than desirable. Average is about 1moa, some approach the 1.5moa deviations but POI to POA shift are consistent across the board with either one. I personally like the look and performance of the QD muzzle brake over the standard model. Once the standard muzzle brake model is installed, they rarely work loose, as with the QD models the tighten in a CCW reasoning to eliminate the loosening issue.

 

[bm11]

Re: any experiance with the SAS QD system?

Just want to bump this up. For anyone who has tried it, how is the shift on the QA suppressor vs the thread on?

I own a thread on Ti Arbiter, and am trying to figure out if it is worth it to call Tim and see if he'll upgrade it. I have the factory Bartlein barrel for my AX, still unshot, with the SAS QA brake on it, and it looks like an intriguing method of attachment.

 

[BLANKSGUNS]

Re: any experiance with the SAS QD system?

On the SAS QD suppressors, I have experienced on average about a 1moa POI shift. Some will be near 0, some to 1.5moa. This will depend on barrel, threading and other factors of course. They are repeatable and solid on the lock up. As for the conversion from the thread over muzzle brake Arbitor design to the QD, not recommended nor expected to be offered as an upgrade due to there is a lot of changes internally that has been made to accommodate the QD attachment point and rear. Not worth all the time and material, I would recommend getting swapping out the current brake on the AX you have or get the new QD model. Good news is that the .338 QD model will work on the .30cal QD muzzle brakes so if you decide to run the AX .338 and go with the QD can, you will be covered. If you need any assistance on the SAS muzzle brake feel free to contact myself or Mile High Shooting Accy's for assistance.

 

[DAVETOOLEY]

Re: any experiance with the SAS QD system?

I just delievered 8 complete systems to South Carolina Law Enforcement Division SWAT team with the QD system. Each rifle was supplied with a target, two shots w/o and two shots w/can. POI shift was .7 to 1.75 MOA pretty much straight up and the can had absolutely no effect on accuracy.

 

[Intrepid4576]

Re: any experiance with the SAS QD system?

Im sorry but im confused - POI shift was .7 - 1.75

the can had no effect on accuracy? wouldnt the POI shift be the effect on accuracy?

Im new to shooting but trying to learn so im sorry if im missing something

 

[BLANKSGUNS]

Re: any experiance with the SAS QD system?

No sir, the POI is a direct effect and understood factor when suppressing a weapon. The groupings being the accuracy are not ill favored with the suppressor in this case, but in many the groups actually improve but this can be directly related to user comfort level and less disturbances when firing the weapon. Hope this helps.

 

[Intrepid4576]

Re: any experiance with the SAS QD system?

ahhh yes i understand now thank you very much