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Thread: Suppressor with 6.5 Grendel

  1. #21
    Bloodstained
    Join Date
    Sep 2016
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    64
    I just run it dirty. My grendel runs great from round 100 to round 500 after cleaning. The first hundred are iffy if I do a deep clean. So, now I only clean the barrel, chamber, and bolt face.

    The Alexander arms Mags have (had) white followers, that changed quickly.

  2. #22
    Chieftain Klem's Avatar
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    Aug 2013
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    Twin Peaks WA
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    The crud all over the inside and magazine looks bad but it is only cosmetic. Burnsy's right, it doesn't affect accuracy to have a coat of burnt powder on the next round.

    For cleaning I use a few generous sprays of WD40 to loosen-up all the carbon in the receiver and BCG. I lay a few old newspapers below as you spray and let it drip out, soaked up by the newspaper. Then wipe with a few disposable paper towels and - Voila! I agree, the amount of black crud coming out on the paper towels is a shocker but you get used to it, and it doesn't have to be brand-new-clean, just reliable clean. Like the old saying, 'It's only kinky the first time!'

    It doesn't really take any longer than cleaning a non-suppressed AR, just uses a few more paper towels. The only thing is, for precision guns I like to leave the barrels dirty to retain the zero so have to watch that the degreaser doesn't go into the barrel. The only time I will clean everything and include the barrel in the cleaning is if it's an SBR or 100M subsonic gun like a 300BLK. Retaining a precise cold-bore marksman's zero is a non-issue in those types of guns.

    When suppressed, the extra crud in your receiver and mag is coming back via the chamber, not the gas system. I know this being a left-hander. It comes back out the chamber from an over-pressured barrel and blasts out the ejection port into your face. Your gas system; DI or piston, regulated or unregulated, or even an adjustable carrier really has nothing to do with that. The choice of powder, the volume of the suppressor and diameter of the suppressor bore (e.g. using a 30cal suppressor on a 6.5, or a reflex suppressor with a generous blast chamber) will have more effect on the build-up of crud than the gas system.

    An ultrasonic cleaner works better than a vibratory tumbler in cleaning suppressed cases and baffles. Bit more effort drying it all out so only use it occasionally and pop the primers out first. Normally I just set the vibratory tumbler for double the usual time and come back a few hours later.

    Make sure you detach the suppressor from the gun after shooting. Don't store it attached is what I mean. All that carbon is hydroscopic so you don't want to encourage corrosion in the barrel.

  3. #23
    Bloodstained
    Join Date
    Jul 2017
    Posts
    31
    I have a Larue rifle. It ran just fine with 2 different suppressors and the stock non-adjustable gas block, YHM ultralight 7” and a TBAC Ultra 5”. Maybe I’m just not as sensitive as some of you guys, or maybe I’m just a lot more ignorant. Who knows... but the rifle worked great with both. The AR-15 isn’t exactly a “finicky” weapon. sounds to me like there’s a whole lot of splitting hairs on this thread. Whatever suppressor you have, hang that sucker and start pulling the trigger, odds are it’s going to work. If you want to make a few changes, pony up a few bucks for a SLR AGB. It’s that simple.

  4. #24
    Banned
    Join Date
    Oct 2017
    Posts
    33
    My GEMTECH ONE works fine on everything from a 5.56 AUG to a R1 300 Winmag. AR 15s 223,7.62x39,300 BO, AR10 260, 308, 300 SAUM, Bolt guns in 6.5 CM, 270 WCF, 280 AI, 30-06, 300 H&H.

    Twist on quick mounts and blaze away.

    6.5 Grendel AA upper (bought here) arrives today. Probably the ONE will work fine on it too.

  5. #25
    Bloodstained TKO's Avatar
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    Feb 2017
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    64
    Not familiar with the Larue issue, but with my 7" .30 cal Thunderbeast I had to dial the gas way back with my load.

    I was running a standard 3 oz carbine buffer, but have since changed the steel weights out for tungsten ones to bring the buffer up to H2 weight. This was done because I had a couple of FTF's whereby the round stripped off the mag and chambered, but not fully into battery. I am hoping the added mass to the buffer will generate more momentum. I am curious to see how much, if any, I will need to open the gas system back up.

    Actually, I hope it is to full gas or nearly so which will make the swap from suppressed to non-suppressed fire less involved. If the rain ever stops, I will be heading to the range to launch a few 6.5's and to do some more subsonic development with my 8" 300 AAC.

  6. #26
    Quote Originally Posted by Klem View Post
    The crud all over the inside and magazine looks bad but it is only cosmetic. Burnsy's right, it doesn't affect accuracy to have a coat of burnt powder on the next round.

    For cleaning I use a few generous sprays of WD40 to loosen-up all the carbon in the receiver and BCG. I lay a few old newspapers below as you spray and let it drip out, soaked up by the newspaper. Then wipe with a few disposable paper towels and - Voila! I agree, the amount of black crud coming out on the paper towels is a shocker but you get used to it, and it doesn't have to be brand-new-clean, just reliable clean. Like the old saying, 'It's only kinky the first time!'
    Yes, a shocker for a gas piston guy like myself. But as you say, the worst damage is probably just to my sensibilities.

    I'll stick with the can on the AR for awhile. I'll get faster at deep cleaning the more I do it I suppose.

    Thanks for the tips.

  7. #27
    Anyone look at the Dead Air Sandman-K? It has no length limits. Was thinking of getting that and if it doesn't work well, I could use it with my 8.25" 300blk and use the AAC 762SDN6 with my 6.5.

  8. #28
    Ok. After about 100 rounds, most of it suppressed, on an indoor range, I donít think my 12Ē build with the 762SDN6 was a good idea. Itís not bad when you are near it but when you are behind it, it does get a little loud. When the weather warms up, I will try it outdoors. Iíll stick to my 300blk for indoor work. Itís fine even with supersonic. I currently keep my 6.5G at work now in case I need to put down some deer. Itís winter now so people will be crashing into them. Will see how it does

  9. #29
    Bloodstained
    Join Date
    Nov 2017
    Posts
    52
    ... I was wondering if I should ask them to ship it without the brake installed ...
    When buying an upper, I always ask for the muzzle devices to be removed and to have the threads wrapped in a "KAC thread protector" (some electrical tape). But now that you mention it, maybe 2 years ago, I called Larue and asked if I could buy a rifle and have them remove the muzzle device and they said NO. So glad to see they are a little more flexible now.
    Factory installed muzzle devices can be a *itch to get off.

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