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AR Pistol buffer question

This is a discussion on AR Pistol buffer question within the Gun Projects forums, part of the Gun Forum category; I have a 300Blk Aero Precision pistol that I am trying out to see how well I like it. The issue I am having is ...


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Old 02-23-2020, 08:47 AM   #1
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AR Pistol buffer question

I have a 300Blk Aero Precision pistol that I am trying out to see how well I like it. The issue I am having is my head hurts after shooting this gun and I am wondering if changing the buffer spring would help. I have looked at JP Enterprises silent capture spring and thought about trying one of those. Right now I have a SBPDW brace on it and I am shooting supersonic rounds. 115, 123, and 150 so far trying to figure out what it likes and doesn't like.

I will change the trigger to more of a 3 gun trigger and muzzle brake to something that sends the noise downrange since I don't have a suppressor at the moment and have no plans at this time to get one. I bought this gun used a month or so ago.

20200223_124151.jpg

20200223_131101.jpg
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Old 02-23-2020, 09:28 AM   #2
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I'd look at a muzzle treatment before I'd start tinkering with the buffer. Unless you are sure your headache is a result of buffer noise. I could be wrong, but with 5.56 if you change the buffer you may need to adjust the gas system somehow to get good cycling. I would assume 300 BLK is similar. Muzzle blast on AR pistols is stupid loud. A linear comp will make it not quite so bad for you (being behind the gun) at least.
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Old 02-23-2020, 09:34 AM   #3
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Undoubtedly the muzzle blast and concussion.
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Old 02-23-2020, 09:36 AM   #4
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Quote:
Originally Posted by NorthernMichigan View Post
I'd look at a muzzle treatment before I'd start tinkering with the buffer. Unless you are sure your headache is a result of buffer noise. I could be wrong, but with 5.56 if you change the buffer you may need to adjust the gas system somehow to get good cycling. I would assume 300 BLK is similar. Muzzle blast on AR pistols is stupid loud. A linear comp will make it not quite so bad for you (being behind the gun) at least.
It could be the muzzle brake thats on it thats causing me headaches. I feel like part of it is the SBPDW does not have any plastic where your cheek rest so its head against metal tube. If I could find a blast deflector or whatever you would call it to put on the muzzle device I have now I would go try that and see how that would work
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Old 02-23-2020, 09:36 AM   #5
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+1 with NM.

Try it without the brake on it. Brakes are pretty obnoxious and I usually use muffs AND foamies if I'm shooting with a brake. Shooting indoors or anywhere else that slightly enclosed makes the blast that much worse. Even just an overhang for shade is noticeably "louder".

I'm a fan of the SCS but don't think it's going to help with any headache issue.

The above is based on the assumption that you're not using your head to"brace" your pistol.
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Old 02-23-2020, 09:38 AM   #6
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Originally Posted by littlejacks View Post
+1 with NM.

Try it without the brake on it. Brakes are pretty obnoxious and I usually use muffs AND foamies if I'm shooting with a brake. Shooting indoors or anywhere else that slightly enclosed makes the blast that much worse. Even just an overhang for shade is noticeably "louder".

I'm a fan of the SCS but don't think it's going to help with any headache issue.

The above is based on the assumption that you're not using your head to"brace" your pistol.
My cheek does rest against the buffer tube while shooting but my shoulder is definitely whats bracing the gun
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Old 02-23-2020, 10:53 AM   #7
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I'd look at a linear comp.

https://www.pewpewtactical.com/best-...-compensators/

The above is just an example list (I haven't actually read through it), but you need something to direct all the muzzle blast forward away from you. What you have currently is definitely shedding some sideways, which will come back at you.

I have this: https://www.vsevenweaponsystems.com/helios/ just because I have a light build (it was spendy).

Not sure about the brace. I have a Strike Industries brace. https://www.strikeindustries.com/sho...-stab-pdw.html Probably less nice than the SB shouldered, but easier on a face (there is a rubber bit on there).

Possibly related: how much are you shooting it? AR Pistols are just mean without a suppressor and any high volume shooting will likely leave most people rung a bit. The advantage to the AR Pistol is portability and law (in some states, treated like a pistol that can be transported loaded). They aren't ideal for high volume shooting and should end up more like a bedside gun (IMO) that gets low volume shooting and cleanings, but isn't a high volume workhorse.
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Old 02-23-2020, 11:35 AM   #8
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Quote:
Originally Posted by NorthernMichigan View Post
I'd look at a linear comp.

https://www.pewpewtactical.com/best-...-compensators/

The above is just an example list (I haven't actually read through it), but you need something to direct all the muzzle blast forward away from you. What you have currently is definitely shedding some sideways, which will come back at you.

I have this: https://www.vsevenweaponsystems.com/helios/ just because I have a light build (it was spendy).

Not sure about the brace. I have a Strike Industries brace. https://www.strikeindustries.com/sho...-stab-pdw.html Probably less nice than the SB shouldered, but easier on a face (there is a rubber bit on there).

Possibly related: how much are you shooting it? AR Pistols are just mean without a suppressor and any high volume shooting will likely leave most people rung a bit. The advantage to the AR Pistol is portability and law (in some states, treated like a pistol that can be transported loaded). They aren't ideal for high volume shooting and should end up more like a bedside gun (IMO) that gets low volume shooting and cleanings, but isn't a high volume workhorse.

Its a new to me gun and I have shot possibly 200 rounds through it in the past 2 weeks. 50 of that was yesterday when I went to the range again to zero the Holosun optic and shot some downrange steel afterwards. I will get a linear brake and change the buffer to see if that makes a difference since I think the one install is probably a heavy one used when the gun was suppressed by the previous owner. As much as I like the look and function of the SBPDW brace, I also think its uncomfortable.

I bought the gun to see what I thought about the caliber and for weekend entertainment. Out to 200 yards its a tack driver as it sits

Thanks for the replies!!
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Old 04-19-2020, 11:33 PM   #9
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Slap a can on it, problem solved!
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Old 04-19-2020, 11:52 PM   #10
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OR screw one of these on.

They are the best! Your still going to have the noise but it won't effect you as much. Just make sure there is no one standing off to the side of you.

They also reduce recoil significantly.

https://www.strikeindustries.com/sho...tter-comp.html

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Old 04-22-2020, 07:04 AM   #11
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You have the coolest looking..., Least comfortable brace out there...

The metal slapping your cheek bone on every shot may be the problem...

The ATF specifically prohibits modifying a brace to make it more comfortable for shoulder firing...

The good news is your brace costs a couple times as much as soft SBM4 or adjustable SBA3, or SBA4...

Sell the SBPDW brace, and buy a comfortable one, and the linear comp you initially mentioned...
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