416 upper alternative?

Luther Macc said:
Nefarious has a complete upper that has a 9” barrel. Shorter than I’d like but with a can, wouldn’t that in theory sorta simulate a longer barrel as far as range/accuracy?

And would that 9” barrel even work with the 9” HK slimline handguard? Assuming Im trying to mount a can to the flash hider.
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Anyone got a guess on answering these?
 
Simulating a barrel and improving range & accuracy ....no....only more rifling would do that. Now as far as gas in the system, it could effect dwell time and how much gas is dumped back on you and not out your gas block provided it is vented. Even if it is vented I think a nine inch suppressed barrel would still dump some gas via the ejection port, from the bore, as the shell is extracted and ejected. Not an issue in slow sustained or singular shots. An issue in static rapid fire, at least it is to me, I dont like being gassed by my suppressed guns. I have a 416C clone, I have not shot it suppressed, but even if I did I couldnt provide true data as my clone has a NON vented gas block which is incorrect for a 416C (should be adjustable) from my understanding.
😉😉
I would wait for a 10.3 barrel or chop an MR barrel, research vented and non vented blocks and suppressing each as there are many opinions on that. And then decide for yourself thru your research what is right for you and your budget, your equipment, your desired outcome, your environment, your application. Your on the right path by asking questions🤙🏻🤙🏻.
 
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MSOGDAWG said:
Simulating a barrel and improving range & accuracy ....no....only more rifling would do that. Now as far as gas in the system, it could effect dwell time and how much gas is dumped back on you and not out your gas block provided it is vented. Even if it is vented I think a nine inch suppressed barrel would still dump some gas via the ejection port, from the bore, as the shell is extracted and ejected. Not an issue in slow sustained or singular shots. An issue in static rapid fire, at least it is to me, I dont like being gassed by my suppressed guns. I have a 416C clone, I have not shot it suppressed, but even if I did I couldnt provide true data as my clone has a NON vented gas block which is incorrect for a 416C (should be adjustable) from my understanding.
😉😉
I would wait for a 10.3 barrel or chop an MR barrel, research vented and non vented blocks and suppressing each as there are many opinions on that. And then decide for yourself thru your research what is right for you and your budget, your equipment, your desired outcome, your environment, your application. Your on the right path by asking questions🤙🏻🤙🏻.
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Ok thanks. In that case 9” is just too short. And besides, there’s no telling if the can will even fit with the handguard there.

10.4-11” is really what Im looking for. And it seems the MR556 upper route is best. It’s also economical since it comes with the buffer/spring and BCG from the looks of the description in the link.

Nefarious might make a nice product but availability seems too scarce and they dont answer their phone.

One thing I’d like to get (or know if it will work) is to buy a 416 gas block to put on the MR556 upper. This would give me the ability to adjust the gas on the fly for suppressor usage.

I can never tell which stuff on the MR vs 416 is cross compatible.
 
Gas blocks are the same-ish....you have adjustable, vented and non vented. Then you have gas blocks specific to 10.3 and 14.5 - 16 inch bbls. The gas blocks will be stamped on the right side with those numbers. If you look at the front of the gas block its pretty easy to see if its vented or not (in person). If your looking online and your not sure and the description doesnt state if it is or isnt vented then I would ask the seller. There are new and used blocks that have sling loops and also some without. Some folks sell them with the sling loops cut off, its an easy mod. That plays a big part in your handguard selection as well.
 
Pretty sure if you buy an MR upper and you chop it you will need the gas port tuned as well. At least I did, I believe ADCO can do it all....chop, rethread and gas port. My guy is not available any longer and I dont recall the gas port dimensions we discussed as all of that convo is in an older now lost iphone.

Then you would just need a 10.3 gas block that you settle on. Not sure why Marvin has been hard to contact lately. When I was talking with him about a year ago it took some time for him to get back to me. Have you emailed Beth? She was pretty fast in responding. He can chop, thread and tune also....that is if he isnt so covered up. YMMV🤷🏻‍♂️
 
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MSOGDAWG said:
Pretty sure if you buy an MR upper and you chop it you will need the gas port tuned as well. At least I did, I believe ADCO can do it all....chop, rethread and gas port. My guy is not available any longer and I dont recall the gas port dimensions we discussed as all of that convo is in an older now lost iphone.

Then you would just need a 10.3 gas block that you settle on. Not sure why Marvin has been hard to contact lately. When I was talking with him about a year ago it took some time for him to get back to me. Have you emailed Beth? She was pretty fast in responding. He can chop, thread and tune also....that is if he isnt so covered up. YMMV🤷🏻‍♂️
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Yes I’ve both called & emailed.

Best case scenario seems to be trusting a qualified company to do the setup ao long as I know what I want in the general sense. For example...

- get MR upper
- get factory slim line handguard
- get another OSS flash hider
- ship to a reputable company
- request their recommendation on the adjustable gas block i need for my particular setup (barrel length & OSS can)

Then let them cut up the barrel, tune, and assemble it all.

For example, I know I want 10.5”-11” barrel, I want adjustable gas block, I use OSS cans.... i had no idea that ports needed to be retuned. But an expert such as yourself or one of these companies does know and should be able to hold my hand thru the process.
 
Using an OSS can may make things a little different as well. Are you using the can that ports extra gas to the front of your suppressor? If so you may want to discuss that with the company you use so everything can be tuned right for your setup.
 
MSOGDAWG said:
Using an OSS can may make things a little different as well. Are you using the can that ports extra gas to the front of your suppressor? If so you may want to discuss that with the company you use so everything can be tuned right for your setup.
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Correct. This can was originally on my Tavor - thus the need for super effective redirecting of the gas since that’s sorta a problem on suppressed bullpups.

Side question... Im a bit partial to 11” on the barrel. But if I go that route that would require a specific gas block or other components right? Much easier to find a gas block for the standard 416 lemgth of 10.4”?
 
In all honesty my experience is with the standard cut "legacy" lengths. I say legacy because I know some of the more modern variants have 11" bbls, so I am not sure if they use 10 inch specific gas blocks and if they do what if any tuning or modding to barrel gas ports and GBs themselves. Plus you are going to be using a suppressor that by its very design creates less gas back pressure. Thats getting out into an area that is unknown by me.
 
MSOGDAWG said:
In all honesty my experience is with the standard cut "legacy" lengths. I say legacy because I know some of the more modern variants have 11" bbls, so I am not sure if they use 10 inch specific gas blocks and if they do what if any tuning or modding to barrel gas ports and GBs themselves. Plus you are going to be using a suppressor that by its very design creates less gas back pressure. Thats getting out into an area that is unknown by me.
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In the past I was told by MR aficionados that the MR (especially with this can) does very well at functioning without any tuning needed.

As for the gas block, good question. 11” is the A5 variant and what the 433 is designed to. The A3 is 10.4” right? Someone more knowledgeable than us would have to chime in on the gas block compatibility.

Me thinks that if the 14 & 16” variants use the same gas block, I’d like to assume the A3 416 adjustable gas block was used on the A5. But I dunno.
 
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Luther Macc said:
I already own a complete MR556.

Im looking to get a comparable 10.5-11” upper that I can swap onto it when needed.
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I know.

Since you seemed open to the idea of modifying an MR556 upper ("Yes I think modifying a MR upper would be nice"), I provided you with a source for an MR556 upper to chop down that is 100% compatible.
 
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