Tuning With An Aero Precision Adjustable Gas Block

[@maximusnguyen7217]

Just what I needed. Just got the .750 adjustable gas block for my barrel and 308 build. Looking forward to this!

[@ChelseaFCNut]

Just tuned my aero gas block today following these instructions. Exact scenario, cycles perfectly. Thanks!

[@tjsaunders6528]

Thanks for the video! Had my block tuned in about 5 minutes after watching this.

[@catace123]

Just got mine installed and heading to the range tomorrow to tune it! Thanks for making quality and affordable products you guys!

[@JoeOfAllTrades]

how did yours work out for you?

[@wiggly8484]

Thanks for this, I was doing completely wrong setting up for my suppressor! I was doing turns instead of clicks and close to open instead of opened to close!

[@josephcuison5412]

Yes, you can also do it reverse, close to open. Start with 2 clicks open from close. Open 2 clicks at a time until you get the bolt hold open, then open 2 clicks more for reliability

[@aaronkramer7354]

This was interesting and appreciated, now to get some of these for my next build.

[@justisblanchard7430]

Great video! was interested in this, will def be picking one up

[@LittleNemoGaming]

When you turn it all the way clockwise/tight does it shut off the gas system completely, thereby essentially turning your AR into a bolt action? Asking for the M5 .308... I might want to do that in the future, occasionally setting it that way.

[@AeroPrecision]

yes.

[@Texan2a]

@@AeroPrecision Any specific suggestions for tuning with a suppressor? Attached while tuning or not?

[@Chamdar17]

​@@Texan2a Old post but of course you tune with the suppressor attached, how else will you know when you've minimized blow-back? Most suppressor designs will result in more blowback then running unsuppressed with a given ammo, so you need to tune appropriately for each, as well as for each ammo type (load, weight).

[@scaldedape6213]

Gonna have to grab one of these for my M5E1. Easily my favorite rifle in the safe. Just a little over gassed.

[@j_guido444]

Great tutorial!

[@06barcafan10]

Cautionary Tale: I took my custom high end AR with adjustable gas block to the week-long Gunsite carbine course. I had the rifle perfectly tuned and gassed at sea level with excellent weather conditions. In the high desert with wind, rain, dust, cold, etc….the system shit the bed after two days. Spoke to the on-site gunsmiths. They see that often enough. You absolutely must adjust the gas block to account for current conditions. I stopped using adjustable blocks altogether.

[@JerrBearTactical]

How many rounds in your testing before carbon lock up will happen?

[@theknightstemplarss]

I’ve had this gas block. Installed it in June of last year, almost 1,000 rounds and runs perfect.

[@Tunechi_Lee]

​@@theknightstemplarss Of course it will still function, but are you able to turn the adjustment screw?

[@theknightstemplarss]

@@Tunechi_Lee yep

[@jeremyhesaid]

526 1/2 rounds

[@theknightstemplarss]

@@jeremyhesaid only half of the round came out? 😂

[@AA-zl4wt]

Great video. Thank you

[@Leadslinger4593]

I’m not sure if this is older model but mine was 20 click to be fully open.

[@calvins4084]

I don't have a crazy amount on mine somewhere around 500 but it's ran flawless super easy to adjust and tune with my suppressor I keep looking to see anybody's used it hard time abuse

[@Averagegunenthusiast]

My 308 I think the recoil knocks the catch loose, I have found I can hit the stock on the table and it will send the bolt home. The reason I say this is because I couldn’t get my 308 to cycle with the gas block all the way open. Is it 15 clicks for the 308 and 15 or just the 15. When I took the gas block back off I looked inside with 15 clicks and noticed the adjustment screw is still visible in the gas port, it took about 18 to 20 to where I couldn’t see it anymore. I suspect I may have been slightly off when installing the gas block but I’m not sure I rechecked the alignment and have the block out 18 clicks.

[@Averagegunenthusiast]

I have an update this is not what was happening, what happened was the bolt wasn’t going all the way to the rear, it was catching on the magazine follower. I used a slow motion camera to watch the ejection pattern which was right at the 6 o clock position. I sent the upper back to the manufacturer and they found the bolt was out of spec, it wouldn’t hold up the bolt carrier but I wasn’t sure if that was a valid test on an ar10 due to the heavier bolt. Well get it back with a new bolt and it stands up on end supporting the carrier. Took it out today the first couple 1 round tests didn’t go as expected but it was ejecting at the 3 o clock position high side of properly gassed. After a few rounds it started working better, found for some reason it doesn’t like Aguilar ammo, cycles Norma, PMC and Winchester soft point fine. I also noticed with my metal mag it locked back to the rear more than with the mag pull mag.

[@NL5977]

I also noticed my gas block wasn't clear of the set screw after 15 turns. Fired it at 23 clicks open trying to get lock back. Is it possible I blew my bolts gas rings? Im not sure if this Faxon ever passed the stand up test.

[@voteholyk]

I would love to come out to the facility. I just picked up a Breach CH for my AR, good stuff.

[@Dardrum]

Very Nice, Aero is KING

[@zarmindrow5831]

Awesome. Thanks dude.

[@go_venture7512]

Question, If I’m tuning for a suppressor do I do these exact steps just with the suppressor on ?

[@xxviceslikevipersxx]

Is there a disadvantage to doing this dame process but starting from the closed position

[@2ndamendment-noinfringement]

Very helpful. Thanks.

[@highspeed9518]

One of the best block out there for the money,designed better than slr imo

[@russhayes4882]

Thanks again !

[@T_Birmingham]

Great vid, thanks

[@tedundercarriage8183]

why not put a larger screw on there? something you could actually turn through the handguard?

Looked like the gun was pretty close on the first round, very little recoil

[@superdavepumpkinpatch5205]

Ive got one that wont let me cycle at any stage, wide open or not. Shows signs of gas leak around the block but ive had it off and on 3 times and checked the gas tube pin and port lineup.. doesnt help.

[@joemamma2647]

I just installed mine. Same thing aero precision. But for some reason it isn't clicking

[@bcclarey]

Do I follow the same procedure for adjusting the gas block when using my suppressor?

[@HFS_Tradecraft]

Got mine installed yesterday, it has 28 clicks tho, I was doing some range test and on 28th was still under gassed, it was installed by pro gunsmith. 3oz buffer, no gas leaks, carbine setup. So does it have to be 15 clicks even if I can get 13 more?

[@HFS_Tradecraft]

update, sorted, it does have to be 15 clicks, when suppressed I have the optimal reliability at 7th click

[@gediminasjaramaitis6353]

@@HFS_Tradecraft so finally is there 15 or 28 clicks? I bought it and mine has got 20 and more, I’m afraid to screw it out completely. Still not tuned on the range, bought complete aero precision complete gun week ago.

[@HFS_Tradecraft]

@@gediminasjaramaitis6353 Hi, so it has more than 20. BUT - you operate between 0 and 15, mine has best perfromance at 7th click counting from 0 - I run 10,5 sbr with A-Tec monoblok 40-3 suppressor, I guess the 6-8 would be the goldilocks zone

[@gediminasjaramaitis6353]

@@HFS_Tradecraft thanks a lot for clarifying!

[@HFS_Tradecraft]

@@gediminasjaramaitis6353 my pleasure, have fun :)

[@jedeckert9525]

So what’s up with the spring and ball that came with it? Extra parts? Nothing in the instructions about them.

[@ahumm8280]

Yes they are extras for just in case they are worn or lost during maintainance. I have these on 2 11.5 builds. No complaints so far.

[@Texan2a]

Any specific suggestions for tuning with a suppressor? Attached while tuning or not?

[@SPENCER1SHOT]

What's the total height of this gas block

[@ThePatrickBateman69]

So tuning this with .223 PMC Bronze is probably smart, a weaker range ammo. Finding out where it reliably cycles and then clicking it back 2-3 clicks counterclockwise in order to allow it to cycle hotter ammo (Xtac 5.56, Green tip Winchester etc) Someone correct me

[@Matt99.]

I’m probably wrong but I think you would want to tune it with heavier ammo, which requires less blowback to cycle than a lighter round would Tune with heavy ammo, that way when you run 55gr it will for sure lock back If you tune with 55gr then when you use 77gr it would send the bolt back harsher? And the heavier round will definitely cycle if you tune for 55gr

[@MightbePettingmyCat]

@@Matt99.you have it backwards. all rifle manufacturers ship their finished uppers/rifles overgassed so it runs all type of ammo, even weaker loads. quality ammo will cycle in an undergassed gun, bad ammo will not

[@nickkonstandinou1070]

Is it the same process when running a suppressor?

[@TheSpanishPlague]

Are you able to fully close the gas system with this gas block? I am considering making a sort of bolt action ar.

[@TheSpanishPlague]

nvm i see the answer down below

[@grzegorzkobuszewski5037]

From new, my Aero Precision did not reload every ammo. After 200 shots it stopped reloading my favorite. The gas block was set 19 clicks from closing. (and you state that at 15 it is maximally open) Clicks from 0 to 32kliks. At 27 clicks it's getting better, but it's still not good.... What's wrong? gas key in the lock clean.

[@rilesmattix5217]

Your BCG might be to blame.

[@sharedpollard4407]

Is my brand new 300blk Aero upper adjustable or do i need to buy adjustable block?

[@timowens7214]

You can tell by looking at the gas block. Of unable to see it you'll have to remove the handguard. If it's not adjustable there will be no screw for adjustment

[@NamSandwich1]

why are they out of stock EVERYWHERE?!

[@itzflash6241]

**I need help** When using a lancer mag my bcg only goes out 75% and I need to pull the charging handle for the remaining 25%. Does anyone know what is causing this? Tried this at 15 clicks all the way to 10 clicks out and same result. When using a pmag my bcg goes closed while at 15 clicks out and even 10 clicks out. Which it shouldn’t being that I have it fully open. Buffer tube, plug, and spring are all in right spec. Any help would be awesome

[@tacticalrabbit308]

Now is this the same for the m5 rifle in .308win ?

[@AeroPrecision]

Yes, the adjustment procedures are the same for any rifle or pistol utilizing an Aero Precision Adjustable Gas Block.

[@axegekko6477]

@@AeroPrecision same procedure and setting suggestion if your were tuning with a suppressor? say a Sandman S

[@AeroPrecision]

@@axegekko6477 yes.

[@Frank-eg4mw]

@@AeroPrecision does the barrel have to be dimpled for this gas tube to function and seat properly?

[@michaelduran1044]

@Frank doesn’t hurt to dimple your barrels they make jigs you can dimple with or do it by hand. Most barrels come with one dimple if you lock your gas bock in you can use a whole punch and mark the other one and just drill a tiny amount until you make a crater done!!!! Take it all apart and clean the block and studs with degreaser and apply red lock tight to studs and torque them to 15- 20 inch pounds. Torquing them to tight will actually cause harmonic issues and bullets will suffer from slight turbulence.

[@jmgerbino7073]

Does the m5 come with an adjustable gas block ?

[@yunalfo1552]

What if you don’t hear the click anymore ?

[@illies222]

If you don’t hear the click any more you are past the adjustment and the d tint spring is no longer holing it in place

[@bfdadventure]

So, this gas block acts in restrictive mode rather than bleed off I gather?

[@deangullberry5148]

From what I've read, it's a bleed off system, with a sacrificial carbon chamber..

[@jpcquadnet]

I could not adjust my M5E1 build in 308 to properly cycle. Aero 20" .308 CMV Barrel, Rifle Length, Aero Adjustable Gas Block .750 Low Profile, Aero Melonite Rifle Length Gas Tube. I have to research where I got the A2 buffer system but it looks like a heavy duty spring. Today I will remove the hand guard and examine the gas block for signs of gas leaking / alignment issues. I will also check the BCG gas tube staking and assembly for looseness. I dimpled the barrel using a KAK jig (having done this successfully on many builds already). Note, I thought the fit between the gas block and the barrel tolerance was loose compared to every other gas block I have used in the past. The gas tube seems a little short in the receiver compared to a rifle length 6.5 Grendel build I have. I was thinking to order a 15.5" gas tube and replace the buffer system with a lighter spring and weight. Any other suggestions? Am I missing something? Oh, I had to pin the muzzle device on the barrel because of local laws. Bummer.

[@WillieMakeit]

Same boat here. Aero knows they dropped the ball. Aero should have put gas blocks on the m5 right off the bat.

[@americanmilitiaman88]

Same issue. Mine is 20 inch criterion barrel rifle length gas with their headspaced BCG. Aero M5 carbine tube spring and buffer. Using M 80 fmj. Aero adjustable gas block is all the way open.most of the time it would either stove pipe or just enough to toss the empty case out barely and not pick up the new round. And wont lock back. My guess is that aero calls for the block to go up to the shoulder. My barrel is dimpled so it has that tiny gap. Im putting on a regular gas block today to try it

[@breeve9742]

@@americanmilitiaman88how did it go?

[@Ahcmeddadon]

The gas port on the Aero (ballistic advantage) barrels are notorious for being undersized and need to be drilled out to correct size. I had the same issue with my 18" 308 barrel. Once i had a gunsmith drill the correct size, my M5E1 was cycling like clockwork. I forgot what size needs to be drilled but I'm sure a google search will help.

[@ramiromeza418]

@@Ahcmeddadon do you know if the 18” barrel has an adjustable gas block ?

[@Chamdar17]

I am surprised at tuning from open down instead of from midpoint, seems like a waste of ammo to start from either end since you already know the outcome of each. If you start at the midpoint (turns/clicks) then you can adjust up/down depending on the outcome.

[@Sryofcrv1]

Do you guys know how they come out of the box? I installed one on a 6.5CM I built using a mix of Aero and other parts, the gun cycles fine on the first shot but either fails to load the 2nd round or it light primer strikes every time on the 2nd shot. It seems to be ejecting around 4-4:30 so I assume it's just the block not being opened up enough. I didn't adjust it before I took it out (hadn't seen this video yet). So I'm just wondering if I can tighten from the current setting or if I need to go all the way open like in this video and start from there. Thanks in advance

[@Matt99.]

Pretty much answered your own question haha just start with it open until you find the sweet spot

[@biggshow1045]

1st time watching and I actually learned something I’ve been meaning to find out,thanks. I’ve got a .308 aero m5. A friend gave it to me,but the hand guard has 4 little screws that hold it in place,but I broke 2 of the screws. What’s the best type hand guard.

[@ericx777]

This is on my "to-get" list next month when I get the $$$!!! I really, really one this for shooting with a can! Tired of the gas in the face... really need to tame the back-blast; burnt IMR 4831 does NOT taste good. And BY THE WAY... I don't know what kind of voodoo you guys are doing up there but the 20" M5E1 upper (all Aero) in 6.5 is STUPID accurate! I mean, semi auto's are not supposed to be this accurate! I get consistent 1.25-1.5" groups at 200m with this thing (home-brewed 80% lower, AIM SSTAT trigger, Vortex Viper 6.5-20x)... of course, my ammo is good (recycled Starline fire-formed to its chamber, 147g ELD-M, powder measured to 0.05gr) but damn, less than 3/4 MOA from a semi auto that I was able to build for less than $1600? Man, you guys absolutely ROCK! So, I have to know, is this accuracy indicative of this series of rifle/upper, all your products or maybe something along the lines of that odd car or truck that was just built just right, taken care of and a result of the right materials/manufacturing/assembly/user care and able to make it to 1 million miles? Either way, it reeks of quality but the sheer accuracy blew my mind. I was expecting 1 to 1.5 MOA at best but when I shot 0.70 that first day, I was blown away! I have bolt guns that don't do that good! Anyway, if I got a 1-off, fine, not gonna burn that barrel out, got others, save this one for the boogaloo (lol). If this IS typical of the accuracy, man, you got me as a customer for life! Anyway, see y'all on my next build... a 16" lightweight 308 carbine! Go ahead, call me a fanboy, I don't mind... I own 1600 yards With my M5E1! ;)

[@ericx777]

@@brianf5190 Thanks for the tip. I got the Aero gas block from PA for $44 with my GI discount... just waiting on the handguard to finish the build. I'll post a review here in a few weeks when I get a chance to give it a good test (hard in winter as reloading bench is in the frozen tundra until spring).

[@Seersniper-wq3ik]

Kirk I have a air block installed on my ar-10 when I hired someone to build it. I have a large kickback still. It isn't adjustable, so could it be that he installed it wrong?

[@N8R_Quizzie]

Gonna use this with a new lahar 30

[@jeremyhesaid]

omg!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@Andino.]

All I want is to fix my overgassed AR😢

[@sl6045]

Is it likely that I will need a lighter bcg, buffer or buffer spring?

[@Peter..Griffin]

It insist upon itself....

[@meidamx]

Get some.

[@allenperry2921]

Thats so easy even a knuckle head like me can do it...HAR HAR HAR

[@coryd6396]

The detail is fantastic and orderly, but occasionally speaking too fast :)

[@RicksyFPS]

Wait mine clicks 30 times

[@jeremyhesaid]

dont lot your mom know

[@Allclear75]

That because the new longer adjustment screw has longer flutes in it to engage the detent. In 2020 they switched them and sent previous purchasers new ones, but haven't updated their instructions.

[@KrisSays]

James Reeves got one hell of a sub-moa rifle! Please piece me! That would be AMAZING! THANK YOU IN ADVANCE!

[@darrellstillsjr7784]

You were saying two clicks at a time but at 2 minutes and 17 seconds you did three clicks closed and it 3 minutes and 4 seconds you did three clicks open while telling everyone to do two clicks and it not a big deal but I just letting you know It's good to do as you're saying when trying to teach people how to use something

[@jeremyhesaid]

you the riddler or something ? just read the directions

[@darrellstillsjr7784]

@@jeremyhesaid no just pointing out that It's a do as I say not as I do kind of video but I don't need the directions I know how to adjust them I have 4 different rifles that have aero adjustable gas blocks

[@2ndamendment-noinfringement]

@@darrellstillsjr7784 So where is your video on this topic?

[@darrellstillsjr7784]

@@2ndamendment-noinfringement Don't need one so I'm not making one especially when there is plenty of other people making now

[@Acts-hv8bh]

You guys should move to a red state given the recent Communist events going on in Washington state.

[@Baaail]

They are

[@noah3968]

They're in the process of moving all manufacturing to Ohio right now, I believe

[@hoppyjohnson8571]

@@noah3968Since they are partners with Ballistic Advantage Barrels I would have guessed that they would make the move to Texas.

[@StrapDLBStyle]

Isn't BA in Florida? ​@@hoppyjohnson8571

[@docinak]

Hi.. FYI.. don't film with the sun at your back..

[@AeroPrecision]

tell me more.

[@jeremyhesaid]

STANLEY KUBRICK IS HERE!!!! MARK THE HAIR DRYER is actually STANLEY KUBRICK!! i fucking knew it!

[@kirbyjohnson3756]

I've got to say that is the dumbest barrel profile in the entire history of firearms

[@Engb3259]

Junk. Can't get enough gas through to cycle without a supressor installed. I've tried everything. Piss poor design. Can't be serviced without being removed from the barrell. Tiny Screws stripped out long before reaching 40 in lb specs. Had to cut it off with angle grinder. So aggravating. Put on a regular Daniel Defense. Runs great open or suppressed. Adjustable gas blocks are a failure point and a waste of money for 99.9% of guns. Especially this one.

[@Drylogic_kills]

How long is the adjustment tool ?

[@jc8491]

I think I read somewhere that it was 6" but I haven't yet received my gas block to confirm.