Silenced Ruger SR762 Piston AR-10 Review

In this episode of TFBTV, James review’s Ruger’s new piston operated AR10, the Ruger SR762, with and without a silencer. The Ruger comes with a bevy of features and accessories, right out of the box including:

-Two piece chromed piston and 4-position regulator
-Free float handrail drilled and tapped for rail additions
-Front and rear Samson flip up sights
-Mil-spec fluted barrel with 1/10 twist
-Hogue pistol grip
-Chromed bolt and bolt carrier
-Three Magpul 20rd magazines
-Soft carrying case

And with all of these features, the SR762 can be had, street price, for $1600-$1700. much less than many competitors on the market. Is this just a great deal, or another case of “you get what you pay for?” Watch to find out.

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Full transcript …

– Hey guys, James again from TFB TV, and today we’ve got the piston-fired Ruger SR-762.

This is an extension.

Obviously it’s the 308 or 762 NATO version of the SR-556.

I was thinking earlier today about how Ruger used to not even make AR’s, and now, I mean, they’re just coming up with hit after hit after hit.

This one’s pretty well-equipped.

Comes with three Magpul mags, nice carrying case, and it just feels good.

I mean, it just feels like a good rifle.

It’s got an adjustable piston system, as I’ll show you a little bit later, where you can run it, you know.

You can gas it up, you can gas it down, whatever you need to do at that time.

You’re shooting a suppressor, you’re shooting unlubricated, dirty gun, you can adjust that and that’s an essential feature in a piston-fired gun because it’s kind of like, if you can’t adjust the gas, what’s the point? So let’s fire this thing up.

The Ruger comes with a ton of features right out of the box.

To begin with, it’s got a chrome-plated two-stage piston with an adjustable regulator.

It has a chrome-lined cold hammer-forged mil-spec 41V45 barrel.

The barrel’s actually fluted under the hand guards to reduce weight.

It features 5/8 x 24 threads so you can add some muzzle devices.

A chrome-plated bolt and chrome-plated bolt carrier.

The stock uses a mil-spec buffer tube.

It has folding front and rear iron sights which I initially thought were Troy, but apparently, according to Ruger, they’re Samson manufacturer.

It also has a very nice, smooth-sided light-weight adaptable hand guard.

It has a picatinny rail that runs all along the 12 o’clock position, but the hand guard’s also drilled and tapped for additional rails at 3 o’clock, 6 o’clock, and 9 o’clock.

Ruger includes a couple extra pieces of rail as well as finger groove rail covers.

It comes with a Hogue monogrip pistol grip.

Ruger’s spec sheet says that this comes with a Ruger Elite 452 two-stage trigger that offers a smooth, crisp, 4.5 pound trigger pull.

This trigger was hands down one of the shittiest that I have felt on an AR in a long time, and in fact that may be, spoiler alert, my only gripe about the Ruger.

The Ruger’s overall length is just short of 35 inches with the stock fully collapsed, and 38 inches with it fully extended.

It has a barrel length of 16.12 inches.

It weighs 8.6 pounds.

The barrel has a 1-in-10 inch right-hand twist.

The steal parts are phosphate coated, while the aluminum components are hardcoat anodized.

(rifle fires) – [Voiceover] Nice.

– That’s a good start.

Recoil very mild.

I think the gas piston setting’s on two right now.

It’s pretty mild.

Let’s go shoot for that medium target.

(rifle fires) – [Voiceover] Smoked it.

(rifle fires) – This thing’s awesome.

Alright, now where’s the little guy.

– [Voiceover] Ok, so it’s just to the right.

– Oh yeah.

Oh God.

God, you can barely even see it.

(rifle fires) – [Voiceover] Smoked it.

(rifle fires) – So I just shot a few more five-round groups with this gun and using some 175 grain boat tail.

I believe it’s the Eagle Eye.

I’ve got a picture of it that I’ll put up right now, but using that, I just threw down two four-round groups that were under an inch and a half, and one of those included a three-inch group that was about.9 inches.

So, that’s pretty impressive, especially considering that this gun kind of has a diarrhea trigger.

It’s a pretty shitty trigger.

I just measured it with the little Lyman here and it’s coming in at between nine and a half and a tick over 10 pounds.

To get four rounds in an inch and a half, three rounds in under an inch with a piston gun, I’ve got 20 mile per hour gusts, and I’m shooting with $80 worth of glass, that’s pretty damn good.

So, not bad Ruger.

One thing I really love about the SR-762 is it’s got a four-position gas regulator.

It starts from zero, which basically renders the gas system inoperable.

So you can shoot it basically as a single shot for whatever reason.

In my case, I like to keep the bolt closed if I’m shooting suppressed so you don’t get any noise coming out of the chamber.

Now, you can twist by hand, but this detent spring from the factory is actually really hard.

I find I can twist it to the left pretty easily, but it’s got a hole in it so you can insert an object to get some leverage as needed.

What I’ve found is that by using this Allen key, or a screwdriver, and just twisting it a little bit, the more I did that, the detent spring started loosening up.

I couldn’t even hand adjust it right out of the box, but once I started messing with it, then it became easier to manipulate by hand.

Let’s have a little fun here guys.

We’ve got the Yankee Hill Phantom suppressor, 308 suppressor on the front of this thing.

I’m gonna start off at the manufacturer’s recommended setting of two, and I’m gonna fire off a few rounds.

Then I’m gonna dial it back to zero.

Totally shut off the gas system and see if it’s any quieter.

Let’s check it out.

(rifle fires) I think it’s hearing safe, let’s see.

(rifle fires) Yeah, it’s definitely hearing safe.

You can shoot it without ears with the suppressor on, but I gotta tell you, once you throw the suppressor on there, it really does start to kick.

So, why don’t we dial it down to zero.

We’ll start with one, how about that? Let’s start with one, see if that’s any better.

(rifle fires) Definitely better.

It’s still got a little bit more kick than it ought to, (rifle fires) but I mean, it’s really not that bad.

We are talking 308 after all.

Let me dial it down to zero.

Let’s see how much quieter it is.

Like I said earlier in the video, it’s getting a lot easier.

The more you twist that dial, the more you kind of break it in.

It’s getting a lot easier to tweak.

(rifle fires) I’m not really sure if that was much quieter.

I couldn’t tell from where I’m shooting.

(rifle fires) (rifle fires) I guess it’s a little bit like the Wire.

I’m still picking up a little crack, and that spent round really does not wanna play.

I might have to butt strip this thing.


That’s the first time I’ve stroked a butt since last night, hey yo, but that got it out so, I don’t know.

If you have some good reason for shooting with the gas system turned completely off, I guess go for it, but I didn’t really pick up that much of an auditory benefit, and as you saw, I just had to butt stroke this gun to get the casing out.

Let’s see, I think if I put it back on one, I’m gonna get a relatively light recoil, but still get reliable function with the suppressor.

(rifle fires) Yeah, so I would definitely say if you’re gonna be shooting this gun suppressed, put it in one, and here’s one thing.

I don’t know if you guys have ever shot an AR, a DI AR with a suppressor on it, but son of a bitch, I mean you get hot debris in your face.

That is pretty much completely eliminated with this piston AR.

I’m getting no debris, no blowback.

This is actually really comfortable to shoot, and it’s hearing safe.

So that is one of the huge benefits of having a piston-fired AR with a suppressor.

(rifle fires) So, that was at one, gas setting one.

While that same ammo just ran perfectly with a suppressor, you saw it just barely hang up unsuppressed.

So the suppressor really does add some back pressure that helps kick those rounds out.

So, the SR-762 at 8.6 pounds, it’s kind of a hog.

It’s a little on the heavy side like my ex-girlfriend, and that said, when you add a stainless steal suppressor to the end, it makes it a little bit harder to shoot because you’re putting a lot of weight out in front of you, but that said, it’s still manageable.

(rifle fires) Alright, let’s just rip with this thing, see how it does.

(rifle fires) God, that’s nasty.

I mean, for a piston gun and a 308, the recoil’s manageable even on setting two.

It feels a lot worse actually prone than it does standing.

So for those of you in the market for a piston-operated 308, I, with no hesitation, can tell you to at least check out the Ruger SR-762.

Why is that? Well, it’s got excellent build quality.

It performed very well.

It gives you access to all the AR aftermarket parts.

The SR-762 itself comes with great features out of the box, including three 20-round Magpul mags, a nice soft case, front and rear sights, a Hogue grip.

It does have the shitty old standard collapsible mil-spec stock, but we all know that’s easy to fix, and most of us will be purchasing a piston-operated 308 because we want something clean to run with a suppressor, and the SR-762 does that very well.

You have four options for your gas regulator, from zero, being completely off, all the way to three, being the largest opening.

Another thing, the SR-762 is very reasonably priced.

Whereas a lot of piston-operated 308’s are upwards of $2,000 and you have the SCAR Heavy of course, being $2,600 – $2,700.

You can pick up one of these, I’ve seen them pretty often for $1,700 and less.

Some of them even in the $1,500 – $1,600 range.

Now that’s a pretty good deal for any 308, especially a piston-operated one that come with the sorts of features that the Ruger includes.

In conclusion, those of you in the market for a piston-operated 308, definitely give the SR-762 a hard look.

Thanks for watching.

Thanks to our subscribers, and thank you to our sponsor Ventura Munitions as usual.

See you guys next week.

James Reeves

• NRA-licensed concealed weapons instructor, 2012-present
Maxim Magazine’s MAXIMum Warrior, 2011
• “Co-Director” [air quotes] of TFBTV
• Former Regional Sales Rep, Interstate Arms Corp., MA
• Champion, Key West Cinco De Mayo Taco Eating Competition
• GLOCK® Certified Pistol Operator, 2017-2022
• Lawyer
► Instagram: jjreevesii
► Twitter: @jjreeves
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  • JumpIf NotZero

    3 and 4 rounds “groups” huh? Alright…

    DI ARs with adjustable blocks like this piston gun have do not spit like you’re claiming. Take the adjustable port off a piston gun and it’ll gass you out too. It comes from the barrel while the pressure is high (dwell time) and NOT the DI tube, like so many DI-haters seem to think. This misconception needs to die.

    No. That gun is absolutely not hearing safe. Not even a remote chance. There are NO 308 semi autos ANYWHERE that are hearing safe at the shooters ear. You shout be wearing plugs and that is not a benefit to a piston AR-10.

    Out of curiosity… Do you always lay angled behind a rifle like that? I haven’t seen that esp so pronounced in some time.

    • ostiariusalpha

      I noticed his prone angle was a bit wonky also. And hearing protection would have been a smarter choice.

      • JumpIf NotZero

        I was at an adv precision class, and the first day to establish what people knew there was a shooting mat sat angled to the gun. People who didn’t know better just layed angled on the mat with the rifle wonky, people who did just layed 1/2 off the mat and 1/2 in dirt and rocks.

        It was there as a suggestion to do it wrong. I’ve kept this example in mind and use it when instructing 🙂

        • Wolfgar

          If you hit your target, your doing it right.

          • ostiariusalpha

            Well, technically you can hit your target from just about any position or stance, it’s simply that some are more stable & comfortable for maintaining accuracy. YMMV

          • JumpIf NotZero

            Exactly. “Hitting the Target” shouldn’t be the end all metric of fundamentals. There is also this:

            I mean, for a piston gun and a 308, the recoil’s manageable even on setting two. It feels a lot worse actually prone than it does standing.

            That’s because he’s angled out on it, trying to use muscle build up for the position and not skeletal.

    • DW

      Thought you’d be more happy that someone in TFB finally mortared a rifle. Correctly.

      • JumpIf NotZero

        It wasn’t correct.

        • James R.

          Weird, because it extracted the casing and the gun continued to work. So weird.

        • James R.

          Nice edit. No clearance on the ground and light stroke clearly works. I would have done it differently if this was a hard strike on an elevated surface.

          • JumpIf NotZero

            Yes, I added more for relency to the comment I was replying to.

            Don’t worry, I know full well you were in no danger of breaking anything on a shooting mat.

    • James R.

      A) No
      2) Yes, they do.
      3) Yes, it is.
      4) Sometimes

      • JumpIf NotZero

        lol. Ok… Wow, can’t argue with that! Except that…

        A. You didn’t shoot 4 and 3 round “groups”??? Because “I just threw down two four-round groups that were under an inch and a half, and one of those included a three-inch [3-round?] group that was about .9 inches.” Says that you did. Try 10 round groups please, that’s the bare minimum of anything I’d consider representative of a gun’s mechanical accuracy. Anytime anyone sees “3-5 round groups” they should be skeptical at best.

        2 (we switched to numbers now). You know a lot about DI guns that differs from my experiences. My experience came from full auto suppressed with prototype and experimental gas systems under thermal and highspeed cameras in a lab environment. Properly gassed DI does not “spit” and more than properly piston and less than overgassed piston. The crap coming back to you is from the barrel not the DI tube – this is apparent when the action opens early in the dwell phase of the cycle. This isn’t some black magic – but I am aware a lot of people who bought into piston retrofits in 2008/2009 saw a lot of stupid 3D animations of DI systems gassing themselves to death from the tube, so the misunderstanding isn’t a surprise.

        3. NO. That Ruger 762 AR-10 platform rifle is ABSOLUTELY NOT HEARING SAFE. You’re being foolish on this point. To prove this, I’ll ask you to find ONE SINGLE INSTANCE of even a 556 AR that is hearing safe at the ear. Use Silencer Shop’s youtube testing videos to which there are plenty. There is NO CAN OR GUN on the market that can make the AT SHOOTERS EAR noise below 140db in 556 AR let alone 762. You could not be more incorrect on this. You’re using your calibrated ear… I’ve run a Bruel & Kjaer meter. I really don’t mind if you want to play fast and loose with your hearing – but putting something like that up on youtube with the site’s name attached to it, is reckless imo. There are impressionable people that might think their gun is hearing safe when it’s not.

        4. Cool.

        • James R.

          You’d get more substantive responses if 99% of your posts on TFB weren’t nags or brags. You have too much time on your hands, pal, and I don’t know how the other guys find the time to entertain it. Have a nice day.

          • JumpIf NotZero

            I won’t apologize that I have experience to back up my opinions above. When people are explaining why I’m wrong I personally would like hear why they have a difference of opinion.

            You went to Yale? Oh bro, that’s bragging, sorry, I can’t listen to you on law advice :

            Do whatever you like. But that hearing safe claim you made is dangerous to people that don’t know better. To attribute that non-fact to it being a piston system is even worse because pistons are almost always louder at ear. But anyhow. If I were you, I would feel responsible for that claim.

            You have a nice day as well.

  • MadMonkey


    • James R.

      Better tell SilencerCo they aren’t using the correct term.

      • MadMonkey


  • Geoff

    James, I loves me .308 AR articles/vids, but:
    A) it’s suppressed, not “silenced”.
    B) the term AR-10 is specific to Armalite, just as the SR762 is specific to Ruger, and both of these are subsets of the much broader set of .308 AR pattern designs.
    C) just a friendly tip: fully collapse your stock when mortaring your AR (as opposed to “butt-stroking” it). It could save you some serious headaches.
    D) having owned and shot both DI and piston guns, it’s a wash between them. Pros and cons to each.

    • James R.

      A) No
      B) AR15
      C) Not yet
      D) Yes

      • JumpIf NotZero

        C) Not yet

        Well, you’re an idealist! I personally don’t subscribe to the “what has
        happened in the past will always happen in the future” theory of
        anything. But it’s not like you really had to wail on it, on a solid surface, so I agree it doesn’t matter in this case. I’m sure you could have bicep that case out of there.

  • Chuckwagon524

    I have the Ruger 556 and was having some issues early on but had some direct conversations with a Ruger engineer who gave me some tips. The 762 probably is very similar.
    1. Setting the gas setting to off or 0 greatly improves accuracy. On my 556 I gain 1 MOA in accuracy.
    2. Use the lowest gas setting it takes to eject shells except for steel cased ammo. Always use gas setting 3 or wide open. Brass when fired expands and contracts, but steel just expands. This can make extraction difficult. So on steel ammo set it wide open to get full force available to extract steel casings.
    3. The stock Ruger trigger does suck. First thing I did was put in an inexpensive 2 stage Geisselle and it shoots so much nicer.
    4. Lube it well but with the piston, you will find the bolt doesn’t get very dirty. Keep a good brass brush to scrub the piston and piston chamber from time to time. I try to keep mine dry, but not sure if that’s best?