So I'm seriously considering taking the plunge and getting a can for my S&W MP-15 carbine and have noticed a couple of comments here that S&W guns are "over gassed" Educate me please. If this is the case, are some brands of suppressors a better choice? Would an adjustable gas block be in order? Also, I'm leaning toward a 7.62 can so I can use it on my .308 bolt gun as well.
Suppressor/gas press. question
- Thread starter tomcat mv
- Start date
Re: Suppressor/gas press. question
I was facing the same question,
Depends on barrel length partially. I dont know if MP15's are overgassed, I would suspect they have the same basic DI gas system specs as any other commercial AR rifle. I suppose they could have a larger gas port in the barrel but I would doubt that.
I settled on a Noveske switchblock for my application. I have a 12.5 SBR running a 5.56 can. The gun has been very dependable including supressed and unsupressed. I artibute much of this to the gas system. Many systems work with a can, however how long and for what use remains the question. The added gas of having a can on a unregulated system beats up on the bolt and carrier and places alot of fouling back in the action. This effect can reduce the amount of time you have for reliable opperation between cleanings and may limit round count too.
I have shot my can on longer barreled AR's to include 16", 20" and a 24" (Thats way too long) and have made a observation. From 16" out the effect of the supressor on the gas system was less. The rifle length gas system seems to tolerate it the best.
There are other gas blocks out there that adjust gas bescides the Noveske. But very few are as quick to adjust or tuned like the Noveske. I have no idea what a 7.62 can would have on this system. I do know your probably better off getting a dedicated 5.56 can
I was facing the same question,
Depends on barrel length partially. I dont know if MP15's are overgassed, I would suspect they have the same basic DI gas system specs as any other commercial AR rifle. I suppose they could have a larger gas port in the barrel but I would doubt that.
I settled on a Noveske switchblock for my application. I have a 12.5 SBR running a 5.56 can. The gun has been very dependable including supressed and unsupressed. I artibute much of this to the gas system. Many systems work with a can, however how long and for what use remains the question. The added gas of having a can on a unregulated system beats up on the bolt and carrier and places alot of fouling back in the action. This effect can reduce the amount of time you have for reliable opperation between cleanings and may limit round count too.
I have shot my can on longer barreled AR's to include 16", 20" and a 24" (Thats way too long) and have made a observation. From 16" out the effect of the supressor on the gas system was less. The rifle length gas system seems to tolerate it the best.
There are other gas blocks out there that adjust gas bescides the Noveske. But very few are as quick to adjust or tuned like the Noveske. I have no idea what a 7.62 can would have on this system. I do know your probably better off getting a dedicated 5.56 can
Re: Suppressor/gas press. question
An adjustable block on any AR variant (5.56, 7.62 or otherwise) is advisable when the rifle will be used with a suppressor. Even a rifle/carbine that is perfectly gassed for shooting unsuppressed will be "overgassed" when using a suppressor...its the nature of the beast. But an overgassed rifle will be even more overgassed when used with a can. This can cause a variety of function problems, as well as just generally create a lot of additional wear/tear and possible parts breakages on your rifle. With a suppressor, an adjustable gas block permits the user to: a) completely shut off the gas system; b) tune the gas system for less gas when shooting suppressed to slow down the action/etc. and accommodate the additional gas flow/pressure created by the can; and c) to tune the gas system for more gas when shooting unsuppressed/etc.
As for one particular manufacturer versus another...I'm not going to get into all that stuff because we all have our preferences, but if you take a look through the semi-auto and suppressor sections of the forum, you'll see the primary makes/models that folks are using...all of which will generally work for what you are wanting to do.
As for running a 7.62 can on a 5.56 (or other sub-caliber) platform...it'll be fine in terms of functioning. I routinely run an AAC 7.62 can on smaller caliber rifles, including 5.56 ARs. Depending on the particular can in question as well as the particular AR barrel in question...just remember that your average 7.62 can will be longer and larger in diameter than your average dedicated 5.56 can. Not a big deal, but you will obviously have a longer, larger diameter, heavier can with a 7.62 which may cause you issues depending on how you plan on running the rifle, including possibly a greater POI shift for one.
An adjustable block on any AR variant (5.56, 7.62 or otherwise) is advisable when the rifle will be used with a suppressor. Even a rifle/carbine that is perfectly gassed for shooting unsuppressed will be "overgassed" when using a suppressor...its the nature of the beast. But an overgassed rifle will be even more overgassed when used with a can. This can cause a variety of function problems, as well as just generally create a lot of additional wear/tear and possible parts breakages on your rifle. With a suppressor, an adjustable gas block permits the user to: a) completely shut off the gas system; b) tune the gas system for less gas when shooting suppressed to slow down the action/etc. and accommodate the additional gas flow/pressure created by the can; and c) to tune the gas system for more gas when shooting unsuppressed/etc.
As for one particular manufacturer versus another...I'm not going to get into all that stuff because we all have our preferences, but if you take a look through the semi-auto and suppressor sections of the forum, you'll see the primary makes/models that folks are using...all of which will generally work for what you are wanting to do.
As for running a 7.62 can on a 5.56 (or other sub-caliber) platform...it'll be fine in terms of functioning. I routinely run an AAC 7.62 can on smaller caliber rifles, including 5.56 ARs. Depending on the particular can in question as well as the particular AR barrel in question...just remember that your average 7.62 can will be longer and larger in diameter than your average dedicated 5.56 can. Not a big deal, but you will obviously have a longer, larger diameter, heavier can with a 7.62 which may cause you issues depending on how you plan on running the rifle, including possibly a greater POI shift for one.
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