Suppressors How to set up my 6920 for a suppressor?

[BillCh]

What's the best way for me to get my rig set up for a can?

Last fall I saw the cutest little Colt 6920 at the local spotting goods store. The $150 in discounts I was eligible for made it downright irresistible. This was certainly an impulse buy if there ever was one. So far it has functioned flawlessly. I have only shot 77gr. MK's through it. It perfoms well for what it is. I probably should have gotten a rifle instead as I'm more of a long(er) distance shooter.

I've come to realize that the carbine length gas system with this 16 inch barrel is less than optimum.
I obsess about port pressure as it is and realize that a suppressor will make things worse. I don't want to have it beating itself to death prematurely.

Would installing an adjustable gas block and running the current barrel be a good plan or is that a bandaid? Do I need to just pony up and replace the barrel ?

Last year it became legal to use a can in my state. I want to take advantage of this before some idiot lawmaker does something stupid - again. I've been dragging my feet on this and need to get something going.

I'd appreciate some guidance.
Thanks all.

B

 

[TheJ]

Plenty of people have ran cans on their CL gas AR-15s. I don't think you are going to ruin it by running a can on it as is. If you are worried about it a bunch, swap out an H2 or H3 buffer to slow down your cyclic rate. Though watch out, you will be getting a little gas in your face unless you make or buy a gas-buster type charging handle.

Adjustable gas blocks are fine, the Noveske Switchblock is a great unit. Allows you to run suppressed or unsuppressed with the flip of a switch.

I myself am a huge fan of the ML gas on an AR-15, but if you start swapping your gas system, you will need a new barrel, new handguard, new gas tube. And swapping these may hurt the resale of your Pony Gun if you want to sell it.

 

[fiveoshooter]

I've been running an Ops Inc. 15th model on my mil-spec Colt M4A1 for a few years now with approx 15,000 rounds through same with ZERO problems. The can over-gasses the already over-gassed system so you'll need a gas buster charging handle as mentioned above or you'll get blasted in the face everytime the bolt unlocks. I'd go with an H2 buffer to slow down the unlocking phase (gives the brass a little more time to objurate and contract before extraction) and slows down bolt velocity.

Keep it clean and lubed, change out the gas rings and buffer spring as needed and you'll be GTG. Don't worry about an adjustable gas block as it in not needed. Suppress it and have fun.

 

[mtrmn]

Listen to these guys--you have enough info in the 2 posts so far. Don't listen to the handwringers who tell you your rifle will self destruct with the first magazine of suppressed fire. Keep the money you'd spend on a barrel etc -- you'll need it for the suppressor and tax. When the 6 month+- wait is over, get off the computer and go shoot it.

 

[Gentleman4561]

I run a adjustable gas upper from WAR on my 11.5. Not worried about the gun falling apart. But it helps a TON with gas to the face.

 

[TexasGunTrustLawyer]

Put a mount on it

Put a quality can . . . I.e. surefire SOCOM556, AAC M4-2000, gemtech G5 or Silencerco Saker.

Put a gas buster charging handle if you want

Shoot the snot out of it.

I have many thousands of rounds out of my 12.5" CL gas with an AAC SPR/M4 can without issue.

 

[BillCh]

I try to take pretty good care of my stuff, not abuse it. That's not to say that I don't ask all that my equipment will give when needed. I'd rather be humble and ask than make a critical mistake right out of the gate. This thing isn't made of sugar that's for sure. With proper maintenance and some mechanical common sense I'm sure I'll be fine.

The gas buster sounds like a good move especially from a safety standpoint. I can see one in my future. It might sound a little odd but I kind of like the smell of burnt powder and hot metal. I suppose there is a limit.

I think I'm going to do some calling around tomorrow. The wait time is gong to be a bitch.

Thank for the input all. I appreciate the reassurance.

B