Posted: 4/24/2024 12:35:04 PM EDT
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I posted this in the Ops inc thread in the suppressor section but it got buried at the bottom of a page. I just got an AEM5-30k. Now I need to figure out how best to make it work on my SCAR 20 308 barrel. Ideally I would get the can as flush as possible to the receiver. I have a Mod-H that started life as a 17” Lilja 6.5 Grendel barrel and you guys cut it down and profiled it for the Ops 12th so I’m using that as a reference. The distance from the receiver to the muzzle of the 20” barrel is ~6.7725” I used a tape measure to get the distance from the upper to the step for the threaded portion(6 1/16”) with the 6.5 Creedmoor barrel installed.  I then used calipers to measure the threaded section of the 308 barrel at .710”  Looking at the Mod-H the step is 2.5” behind the muzzle and the custom collar extends .314” behind the step, the 20* taper portion looks to be a little over 1/2 that length.  So if I’m mathing right 20in barrel cut to 16in gives me ~2.7725” to work with. I’ve seen drawings that show both 2.5” and 2.4” to the start of the 20* taper. Do I have enough room for a custom collar? I assume one like I have on the Mod-H could be shortened. If I can go 2.4” from muzzle to step it shouldn’t be a problem. Do I need a collar? I see the drawing for the AE30 showing .92” for the min barrel OD behind the taper to get the suppressor to mount, the scar barrel is .84” does that change for the 30cal aem5? I see the drawing for the spr collar showing .755” behind the collar and .725” in front. Does that mean I only need .02” difference for the collar to mount or does the barrel in front of the collar need to be smaller to accommodate the suppressor? Any help is greatly appreciated. |
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Originally Posted By bigbore: You will need a collar. When you send the barrel, mark on it where you want the rear of the suppressor and we'll take care of it. Excellent! Two follow up questions. What is the minimum clearance between the suppressor and receiver? Are you able to make a flush fitting collar like the one below or should I take the portion of the collar behind the tapered section into account(like the picture of the Mod-H in my first post)? 
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Originally Posted By Mblades: Excellent! Two follow up questions. What is the minimum clearance between the suppressor and receiver? Are you able to make a flush fitting collar like the one below or should I take the portion of the collar behind the tapered section into account(like the picture of the Mod-H in my first post)? https://i.imgur.com/T2FaySV.jpg We will put it really close to where you mark your barrel that you want the shoulder. It will be close as we favor function over fashion. If you are concerned about whether or not it's a credit card thickness vs a nickle thickness gap - you are better served sending the work elsewhere. I love AE suppressors, but they are a real PITA mounting regarding managing customer expectations regard aesthetics. |
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: We will put it really close to where you mark your barrel that you want the shoulder. It will be close as we favor function over fashion. If you are concerned about whether or not it's a credit card thickness vs a nickle thickness gap - you are better served sending the work elsewhere. I love AE suppressors, but they are a real PITA mounting regarding managing customer expectations regard aesthetics. Originally Posted By bigbore: Originally Posted By Mblades: Excellent! Two follow up questions. What is the minimum clearance between the suppressor and receiver? Are you able to make a flush fitting collar like the one below or should I take the portion of the collar behind the tapered section into account(like the picture of the Mod-H in my first post)? https://i.imgur.com/T2FaySV.jpg We will put it really close to where you mark your barrel that you want the shoulder. It will be close as we favor function over fashion. If you are concerned about whether or not it's a credit card thickness vs a nickle thickness gap - you are better served sending the work elsewhere. I love AE suppressors, but they are a real PITA mounting regarding managing customer expectations regard aesthetics. I’m not that picky I swear. I’m 100% with you on function over form, I was asking so I could make sure to add enough space to my measurement since you won’t have the receiver to reference. I’ll get the barrel marked and boxed up tonight, then place the order and send it your way tomorrow. Can I put in the note field to add a 30cal brake if you get them back in stock before the work is done? |
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Originally Posted By Mblades: I’m not that picky I swear. I’m 100% with you on function over form, I was asking so I could make sure to add enough space to my measurement since you won’t have the receiver to reference. I’ll get the barrel marked and boxed up tonight, then place the order and send it your way tomorrow. Can I put in the note field to add a 30cal brake if you get them back in stock before the work is done? I should have more .30 brakes soon. We'll get you squared away! |
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: I should have more .30 brakes soon. We'll get you squared away! Originally Posted By bigbore: Originally Posted By Mblades: I’m not that picky I swear. I’m 100% with you on function over form, I was asking so I could make sure to add enough space to my measurement since you won’t have the receiver to reference. I’ll get the barrel marked and boxed up tonight, then place the order and send it your way tomorrow. Can I put in the note field to add a 30cal brake if you get them back in stock before the work is done? I should have more .30 brakes soon. We'll get you squared away! Sweet! Order placed #43159 |