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Ops Inc/Allen Engineering Picture and Discussion Thread (Page 132 of 134)
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Originally Posted By Josh-L: I got a Rosco Husky 10.3 barrel. I’m thinking about getting an Allegheny Arms tapered gas block and throwing an AEM2 or 3 on it. Will this work or does the barrel have to be a 10.5? Anyone have pics of this setup? I’m wondering what rail length to go with. My other guns have BCM QRF quad rails. It will work youll just need to shim it out a bit on the threads depending on which length gas block you choose. Also depends on a short or long threaded muzzle device. I think the .880 would be better than the 1" block on the 10.3. I used a 1" block on a 10.5 and it worked fine. |
| I got to check out my AEM5 in jail today and noticed that I only get 6 1/2 turns. Should I be concerned? |
I now have a ban button. Want to see me use it? Keep it up. - Lancelot
You do not fight out of hate, but rather out of the love and compassion you have for those you are trying to protect.
You do not fight out of hate, but rather out of the love and compassion you have for those you are trying to protect.
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Originally Posted By The_Hammer: I got to check out my AEM5 in jail today and noticed that I only get 6 1/2 turns. Should I be concerned? No |
-Things do not happen. Things are made to happen. -JFK
-Beware the fury of a patient man.
-Thousands and thousands of laws....All for just ten commandments.
-"alot" is not a word.
-Beware the fury of a patient man.
-Thousands and thousands of laws....All for just ten commandments.
-"alot" is not a word.
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I've been wanting an AEM5 for so damn long and now I finally have one. So nice. Attached File |
I now have a ban button. Want to see me use it? Keep it up. - Lancelot
You do not fight out of hate, but rather out of the love and compassion you have for those you are trying to protect.
You do not fight out of hate, but rather out of the love and compassion you have for those you are trying to protect.
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I’m still collecting parts and apparently, I’m guessing, I need special shims for mounting this on a G$ 556 barrel that’s been thread 5/8x24? All the 30 cal shims that I have seem…large, like they’d interfere with the can going over the barrel. The threading is such that there’s quite a gap between the threads and the shoulder of the barrel, so I basically need to use a super thick shim just to fill the space then smaller shims to time it. The only 30 cal shim kits I’ve got laying around are Dead Air and PWS shim kits (which came with DA muzzle devices for a while)…so I guess I need a specific AE one? |
"Oh, bother," said Pooh, as he pulled the pin on another grenade...
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Originally Posted By Evil_Ed: I’m still collecting parts and apparently, I’m guessing, I need special shims for mounting this on a G$ 556 barrel that’s been thread 5/8x24? All the 30 cal shims that I have seem…large, like they’d interfere with the can going over the barrel. The threading is such that there’s quite a gap between the threads and the shoulder of the barrel, so I basically need to use a super thick shim just to fill the space then smaller shims to time it. The only 30 cal shim kits I’ve got laying around are Dead Air and PWS shim kits (which came with DA muzzle devices for a while)…so I guess I need a specific AE one? Get a pack of Surefire shims. |
I'm no good at telling people what they want to hear when I dont believe it myself :)
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Originally Posted By bigbore: Get a pack of Surefire shims. Those, I can find  Thank you! And at some point I'm going to want to ask you if there's a preferred barrel to cut down to 12.5" for a Gordon clone using the M5 DD 12.5"s seem to be unobtanium right now, and they come with an FSB, which is why I was looking at them...I bought a Gordon collar when I bought everything else, then realized I have no idea what I'm doing - but that's a future problem. I can pick up a Colt 14.5 M4 profile barrel for cheap, but...I don't know if they'd be any good for that. Anyway - that's a future thing - off to order a Surefire shim pack. Thanks again!
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"Oh, bother," said Pooh, as he pulled the pin on another grenade...
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Originally Posted By Evil_Ed: Those, I can find Thank you! And at some point I'm going to want to ask you if there's a preferred barrel to cut down to 12.5" for a Gordon clone using the M5 DD 12.5"s seem to be unobtanium right now, and they come with an FSB, which is why I was looking at them...I bought a Gordon collar when I bought everything else, then realized I have no idea what I'm doing - but that's a future problem. I can pick up a Colt 14.5 M4 profile barrel for cheap, but...I don't know if they'd be any good for that. Anyway - that's a future thing - off to order a Surefire shim pack. Thanks again!If you have an OG Gordon collar you’ll want a 12.7”-12.8" barrel with the aem5 AE makes a short Gordon collar for a 12.5” barrel. I have an OG collar on a 12.5 and had to use a KAC spacer and a shim to get the aem5 to the turns i wanted. As far as I understand, the long collar was for the M4-Gordon (M4-D) suppressor on a 14.5” barrel. Short brake with a 0.325" stack of Accu-Washers. With a long brake you could reduce the shims 
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Right, I have the short Gordon collar, and an extra (as in, spare) short 1/2x28 brake and shim that I didn’t realize I couldn’t use when I ordered it, for the g$ barrel I even have an A2 upper kicking around..and some 6 hole hand guards somewhere, and a CAR stock somewhere… |
"Oh, bother," said Pooh, as he pulled the pin on another grenade...
USAF (Ret) 2003-2024
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I finally got this put together. It’s not really a clone of anything. I started with a 12.5” barrel. When I sent everything off to Allegheny Arms, Josh called and let me know the FSB was pinned off center. I ended up taking his recommendation and finding an 11.5” barrel to go with a CANSOF mount. I ordered the last DD barrel ADCO had at the time and this is what the rifle ended up being. I still haven’t had a chance to shoot it, but I rattle canned it the other day. Attached File Attached File |
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Originally Posted By Dagger727: It’s the long mk12 rail. I believe it’s 12.25 15.1 with a rifle length rail: Attached File |
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22 Arc I threw together. Waiting on some 1” tall rings to swap over from the badger mount. Ballistic Advantage 16” rifle gas 22 Arc fluted barrel, Spikes tapered gas block, Allegheny arms extended muzzle brake. Sitting right at 7.5 turns   
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Originally Posted By 7mmStalker: @DackJaniels How did you contain the gas pressure from escaping through the fluted barrel surface? I would like to mount an over the barrel AEM5 or something similar to a rifle with fluted barrel. Im gonna guess that the gas block journal is not fluted |
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Originally Posted By 7mmStalker: @DackJaniels How did you contain the gas pressure from escaping through the fluted barrel surface? I would like to mount an over the barrel AEM5 or something similar to a rifle with fluted barrel. The AEM series isn't open on the inside, they are self-contained and use the barrel collar just for alignment and tension. |
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Originally Posted By Josh-L: So I ditched the 10.3 barrel idea. Now I’m thinking 11.5 with cansof c8 collar. Who is the best to profile the barrel down to the 0.615 diameter or whatever it is that is needed to fit the collar? Allegheny do that? Thinking about using a 11.5 Rosco Husky. I just did that for someone who posted in this thread a few weeks ago. |
I'm no good at telling people what they want to hear when I dont believe it myself :)
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Attached File Attached File Today @bigbore was a cool guy. |
I killed a bacon puppy. :(
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This post is brought to you by The Pogues, the official punk band of the .mil forums.
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My modern Gordon Carbine https://imgur.com/a/DZRRx9t If someone could upload these pictures for me so everyone can see I’d be very appreciative! Colt upper and 14.5” Colt barrel Colt M4 Carbine lower Midwest Industries SP 15” Handguard AE AM4 Delta And all the other parts a modern Gordon Carbine would have. |
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Originally Posted By DoubleARon: https://www.ar15.com/media/mediaFiles/73538/IMG_7038_jpeg-3773506.JPGhttps://www.ar15.com/media/mediaFiles/73538/IMG_7041_jpeg-3773507.JPG Today @bigbore was a cool guy. Looks great! Now get a dot on top and paint that sucker
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 The lower is a temporary stand-in while a new one gets Form 1ed so mostly ignore it though I will be setting up the new one mostly identically, and the crappy Weaver rail I found in my junk parts bin has got to be swapped out for a pic rail (it’s just…not good) - once those are done, and it gets re-zeroed, it meets the Krylon. A2 upper with M4 cuts (I think from JSE Surplus), Colt 6921 barrel assembly, surplus M16A1 BCG from Aim Surplus circa early 2ks (I swapped out the exrtractror spring and red insert for an updated M4 extractor spring and insert), and the handguards were random 6 holers I found kicking around (and will probably be swapped out for B5s, I’m not super happy with these). AE M4-D with a 3 piece long collar as well. And it’s my new favorite rifle out of everything It’s ridiculously quiet. With an H2 buffer it poops out brass at 3:30-3 depending on 55gr or 62gr (well, and ammo quality, and etc) - I should see if it’ll even cycle Wolf, I’m not super sure it will It’s somehow perfectly gassed with a standard Colt 6921 front end. I might go all out with some kind of light mount on the FSB but…I don’t think it needs it.I thought the Mk12 with the AEM5 was tits but this is a whole new level. Way lighter and handier. 240 rounds on it’s first outing at the range and the only misfeed it had was from the first round in a Brownells mag…and I’m gonna blame the mag for that one. Not a lot of gas to face though I’m sure the BCM Gunfighter handle helped with that a little. I really like this thing I’m really tempted to see if I can get a second one and build a more modern version of the same rifle, with a flat top and a rail I can bury the can in
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"Oh, bother," said Pooh, as he pulled the pin on another grenade...
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Originally Posted By Sharden1: My modern Gordon Carbine https://imgur.com/a/DZRRx9t If someone could upload these pictures for me so everyone can see I’d be very appreciative! Colt upper and 14.5” Colt barrel Colt M4 Carbine lower Midwest Industries SP 15” Handguard AE AM4 Delta And all the other parts a modern Gordon Carbine would have.  " /> " />
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So I need some help with setting up a MK12 mod 1 clone. I have been accumulating parts for years and finally put it together this week, I went to try the suppressor fit and something was wrong. The AEM5 was touching the collar before it engages the threads. Turns out the collar shifted while firing without the suppressor. I thought I tightened it well and then used blue locktite. It left a nice little scratch in the ceracoat. Did I miss something here or should I just retighten it, new locktite and try again? I did get the collar and brake off the EE when they weren't readily available several years back. Allegedly they are Allen. |
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Originally Posted By RedFox1911: So I need some help with setting up a MK12 mod 1 clone. I have been accumulating parts for years and finally put it together this week, I went to try the suppressor fit and something was wrong. The AEM5 was touching the collar before it engages the threads. Turns out the collar shifted while firing without the suppressor. I thought I tightened it well and then used blue locktite. It left a nice little scratch in the ceracoat. Did I miss something here or should I just retighten it, new locktite and try again? I did get the collar and brake off the EE when they weren't readily available several years back. Allegedly they are Allen. Who's barrel are you using? Make sure the collar is pushed up all the way against the step on the barrel and tighten the set screw into place. |
Originally Posted By bradpierson26:
So I know you're a SF whore . . . . .
So I know you're a SF whore . . . . .
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Originally Posted By TheTacticalCoyote: Who's barrel are you using? Make sure the collar is pushed up all the way against the step on the barrel and tighten the set screw into place. Its a PRI barrel. It definitely was pressed into place, hence the over 1/2in long scratch in the cerakote. |
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Originally Posted By RedFox1911: Its a PRI barrel. It definitely was pressed into place, hence the over 1/2in long scratch in the cerakote. Originally Posted By RedFox1911: Originally Posted By TheTacticalCoyote: Who's barrel are you using? Make sure the collar is pushed up all the way against the step on the barrel and tighten the set screw into place. Its a PRI barrel. It definitely was pressed into place, hence the over 1/2in long scratch in the cerakote. Are you saying the collar slipped over the step? Post a pic. |
-Things do not happen. Things are made to happen. -JFK
-Beware the fury of a patient man.
-Thousands and thousands of laws....All for just ten commandments.
-"alot" is not a word.
-Beware the fury of a patient man.
-Thousands and thousands of laws....All for just ten commandments.
-"alot" is not a word.
|
Originally Posted By RedFox1911: So I need some help with setting up a MK12 mod 1 clone. I have been accumulating parts for years and finally put it together this week, I went to try the suppressor fit and something was wrong. The AEM5 was touching the collar before it engages the threads. Turns out the collar shifted while firing without the suppressor. I thought I tightened it well and then used blue locktite. It left a nice little scratch in the ceracoat. Did I miss something here or should I just retighten it, new locktite and try again? I did get the collar and brake off the EE when they weren't readily available several years back. Allegedly they are Allen. Collars moving/slipping is pretty common especially with heating/cooling of the barrel with recoil and if you shoot it with the suppressor off. You need to bed it to the barrel with RED loctite if you dont want it to move (thats how recce collars were originally installed). You can also dimple the barrel for the set screw on the collar if that particular collar has one. |
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Originally Posted By the-answer-is-42: Collars moving/slipping is pretty common especially with heating/cooling of the barrel with recoil and if you shoot it with the suppressor off. You need to bed it to the barrel with RED loctite if you dont want it to move (thats how recce collars were originally installed). You can also dimple the barrel for the set screw on the collar if that particular collar has one. Originally Posted By the-answer-is-42: Originally Posted By RedFox1911: So I need some help with setting up a MK12 mod 1 clone. I have been accumulating parts for years and finally put it together this week, I went to try the suppressor fit and something was wrong. The AEM5 was touching the collar before it engages the threads. Turns out the collar shifted while firing without the suppressor. I thought I tightened it well and then used blue locktite. It left a nice little scratch in the ceracoat. Did I miss something here or should I just retighten it, new locktite and try again? I did get the collar and brake off the EE when they weren't readily available several years back. Allegedly they are Allen. Collars moving/slipping is pretty common especially with heating/cooling of the barrel with recoil and if you shoot it with the suppressor off. You need to bed it to the barrel with RED loctite if you dont want it to move (thats how recce collars were originally installed). You can also dimple the barrel for the set screw on the collar if that particular collar has one. Am i the only one that doesn't really care if the collar slides around? I almost exclusively shoot with the can on and the can holds it in place. Ive also heard that the set screw can affect accuracy if too tight. I dont shoot well enough to tell. |
''Hokey religions and ancient weapons are no match for a good blaster at your side, kid.''
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Originally Posted By dtw13: I'm having an alignment issue with my AEM5 on a Recce/mk12 I built. My Geissele rod is showing off center when I run it in the barrel. But i mounted the Ops brake with the supplied crush washer. Would it be better the use shims? You're supposed to use the crush washer with the short brake and shims with the long brake. IMO/IME you can - and I would recommend - using shims on the short brake as well but just starting with the large washer-looking shim to space it out and then using the smaller shims to time it so that it has the additional turns needed. But, your alignment issue could also not be related to that and could just be a slightly off-threading of the 1/2-28 threads or etc. |
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Originally Posted By KavonTN: Am i the only one that doesn't really care if the collar slides around? I almost exclusively shoot with the can on and the can holds it in place. Ive also heard that the set screw can affect accuracy if too tight. I dont shoot well enough to tell. Technically you are correct it doesnt matter as the collar SHOULD slide back and seat on the shelf while threading the suppressor on - but in the case of the original question asker above and others with set-crew collars - the set-screw may tighten back up to the barrel after it cools down preventing the can from pushing the collar back to the shelf and the user thinking it's being seated with proper spacing when it's not. Again, this is if someone is shooting unsuppressed sometimes. I get the "I always shoot suppressed" crowd, but some people just dont so these kinds of scenarios happen. |
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Originally Posted By Engineer5: Are you saying the collar slipped over the step? Post a pic. Originally Posted By Engineer5: Originally Posted By RedFox1911: Originally Posted By TheTacticalCoyote: Who's barrel are you using? Make sure the collar is pushed up all the way against the step on the barrel and tighten the set screw into place. Its a PRI barrel. It definitely was pressed into place, hence the over 1/2in long scratch in the cerakote. Are you saying the collar slipped over the step? Post a pic. It slid forward. How does one go about bedding it with red loctite? Should I use Red on the set screw too?? Attached File |
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Originally Posted By RedFox1911: It slid forward. How does one go about bedding it with red loctite? Should I use Red on the set screw too?? https://www.ar15.com/media/mediaFiles/274977/mk12collar_jpeg-3776843.JPG You slather on a good amount of Red Loctite on the barrel where the collar will sit. Sure do the set screw as well. You can dimple the barrel where the set screw will sit too. |
Originally Posted By bradpierson26:
So I know you're a SF whore . . . . .
So I know you're a SF whore . . . . .
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Found a bit of Ops Inc nostalgia this morning in an old suitcase in my closet. It's something Phil was working on before he passed. I remember him talking about it, but didn't realize I had it. Some kind of sound test equipment that one of his electronic buddies had put together. Probably was designed to hook up to an oscilloscope and then feed data into a computer. Just guessing. If I can figure out how to send pictures here, I'll post. RonA |
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Originally Posted By k31user: Found a bit of Ops Inc nostalgia this morning in an old suitcase in my closet. It's something Phil was working on before he passed. I remember him talking about it, but didn't realize I had it. Some kind of sound test equipment that one of his electronic buddies had put together. Probably was designed to hook up to an oscilloscope and then feed data into a computer. Just guessing. If I can figure out how to send pictures here, I'll post. RonA Great to hear from you, Ron! |
What percentage of AE suppressors sold are going to builds that aren't "clone" related? Who in 2026 is looking at a big heavy can that's a PITA to mount properly, and saying - that's the one I want! Sometimes I think it's just me.  |
I'm no good at telling people what they want to hear when I dont believe it myself :)
| I have 2 AE suppressors and 1 OCL5. None of them are on "clone" correct rifles. The AEM5 is the closest on a MK12 upper but I'm using a Magpul stock and grip with a NF ATACR and Area 419 mount. I like them because they are the quietest suppressors going, even if they are a little gassy on an AR platform. |
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Originally Posted By bigbore: What percentage of AE suppressors sold are going to builds that aren't "clone" related? Who in 2026 is looking at a big heavy can that's a PITA to mount properly, and saying - that's the one I want! Sometimes I think it's just me. https://www.ar15.com/media/mediaFiles/12678/20260607_123704-3777648.jpg You’re not alone 4 ae cans , no clones. Some have come close though! 
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Ops Inc/Allen Engineering Picture and Discussion Thread (Page 132 of 134)
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