My son is a lefty, and it's extremely hard to find left-handed complete upper assemblies in 300BLK. He's wanted one for a while, and I recently bought one from RedXArms for $450-ish. Not knowing a lot about the company, I was honestly a bit apprehensive about the quality and what we'd end up with. We took it to the range with several loads to try, set a target at the 100 yard berm and easily got the gun on paper. And we were completely ecstatic with the results. We loaded H110 under Sierra 125 Pro Hunters to start with. Loads were from 17.2 to 18.0 in 0.2 increments. We settled on 17.6 @ 2.060" after he almost stacked 5 shots into a cloverleaf with all but one of them touching. I didn't break out the chrono but I'm honestly not concerned about the velocity when the accuracy was that good.

This is the only experience that I have with Red-X but I am completely satisfied with their product this time around. Don't know if I'll buy anything else from them because we have about all of the gas guns that we need at the moment. But they do build a beautiful product.

Good shooting...

That upper was only $450?

YEP. It is $390 without the BCG.

Pic shows rail covers that my son added.

Curious...What is his intended use for the gun? Looking at the setup, it seems odd that he chose 300 BLK as the caliber for a 16" gun with a big scope and a rifle stock.

What really matters, though, is that he's happy with it. Looks like it's gonna be a shooter!

Use? Hunting out to 150 yards or so. He has long range bolt rifles as well as 16" gas guns in both bull barrel and light weight tactical versions. Just looking for something a bit different.

We both hate collapsible stocks. The A2 is our stock of choice. What's "odd" about that for a hunting rifle?

Big scope? Not hardly. It's a 3.5-14 power. Not big at all for a hunting rifle.

And that's the glory of the Modern Sporting Rifle. You can assemble them to suit your individual tastes.

If anyone thinks that all 300BLK rifles should be "tacticool" or used solely for defense they're missing out on a great hog and deer hunting cartridge.

Nothing odd about the stock or scope choice for a hunting rifle, it's the choice of caliber in combination with those things that I find odd. Just seems like 6.5 Grendel or 6.8 SPC would have been much better choices for that purpose. There is no argument that either of those calibers are superior to 300 BLK for hunting out of the setup you guys selected (16" barrel out to 150 yards as stated). I just don't see any advantage of going with the 300 BLK in this scenario.

Like I said earlier, though, what matters is that he got the gun he wanted.

Well, according to one member here, the 300 blackout was designed for being used as a sniper round.

TTU its probably more of an issue to find a suitable caliber in a factory made upper thats in a LH configuration. If the OP could build one im sure he would have, if he wanted a different caliber in sure he could have a custom one made or paid 2xs as much. But he didnt and is satified with his purchase.

That's YOUR opinion. Which I didn't ask for, by the way.

I must have missed the published information about the mandatory configuration for the 300BLK rifles and which cartridges that must be used when building a 16" gas gun.

I've read all of your posts about the 300BLK, and I'm not going to get in a debate with you about it. You can look elsewhere for that.

The gun suits him just fine and I have no doubt that it will kill every hog he shoots and that he will smile the entire time.

If you'd like to finance the next one so that it is built to your standards I'll make certain that my son gets in touch with you beforehand.



YEP. We could have bought most anything he wanted. They had several caliber choices available in LH upper assemblies, but he wanted the 300. So that's what we bought.

Hey man, I said twice that I'm glad he got the gun he wanted. I don't see why you're being combative.

There's nothing wrong with the gun. Anybody can own and shoot whatever they want. I just don't understand why 300 BLK was selected as the caliber of choice in this scenario. The way the gun is configured doesn't take advantage of any of the benefits of 300 BLK, so it seems illogical. Would have made much more sense to go with a 6.8 or 6.5.

- You reload, so Ammo availability isn't an issue.
- 16" barrel so the efficiency of 300 BLK in short barrels doesn't come into play.
- Not suppressed, so no advantage there.
- Bought the upper fully assembled, so the choice had nothing to do with 6.8 and 6.5 using caliber specific bolts
- recoil is negligible for all 3 cartridges

So, I can't find a single advantage of the 300 BLK in this case. The 6.5 and 6.8, on the other hand, have the major advantage of significantly better ballistics.

Since the gun is built for hunting, why wouldn't you go with a more effective hunting round?

If the answer is that he just wanted to go with the current tacticool round that's fine!

I've told you 3 times. No arguments from me. We're ecstatic with it. It's the finest cartridge that has ever been invented. Possibly going to overtake the 270 Winchester in popularity.

Once again ...... If you'd like to finance the next one so that it is built to your standards I'll make certain that my son gets in touch with you beforehand.

in another thread.

Because there is nothing to argue. You know there is no reason to have gone with 300BLK other than that it's "tacticool", so how could you argue?

Glad you're both ecstatic. That's what really counts.

I just had my first opportunity to use the "Ignore this user" tool. Wow. Works great.

That's some great shooting from your boy! Personally, I love the 300BLK in an AR platform for hunting. It's on my list of rifles to own for sure.

I just did the same.

Glad you and your son are happy with your new rifle!

Thanks guys.

Can't wait to see exactly what it's capable of with 110 Vmax and the Barnes 110s. Sure is a fun gun to shoot.

Me too

How in the heck do i use this feature!

Click on the name, user profile, ignore

Like a liberal college student crying in their "safe space," run and hide where facts and opposing views can't conflict with what you want to believe! Hillary would be proud!

Ignorance is bliss. Just because Creedmoor didnt ask nor need your opinion doesnt mean hes hiding. Its like CNN with their pushy liberal hippy crap, he blocked a channel no one cares to watch. Im so glad you called someones kid out, you must be proud. Im proud this dad let his son make a choice, which for all you know may not have been what dad would have liked. Just wait till youre married and have kids, youll realize that what you want doesnt really matter anymore.

Nice groups, especially for a first run.

I also shoot rifles lefty, but haven't gone with a dedicated lefty upper yet. I may give one a try, but traditional hasn't been a problem for me yet. I just have to swap a bunch of parts to ambi-control to really be comfortable with 'em.

I'm not sure what the love/hate with the 300BO is all about. I had one and sold it. That decision had nothing to do with terminal ballistics inside of 150yd, I was just tired of stocking and reloading so many different cartridges.

Either way, nice setup and good luck to your son knocking 'em out.

I'm thinking my next AR will be a right hand side charging upper. Think about the ergonomics. Hold the grip in your left hand, shoulder the rifle, grab the bolt knob with your right, and cycle it. In business with no fuss.

It has been to my benefit, that I could see an open bolt shooting a RH AR-15, left handed. Drop the mag, insert a new one, close the bolt, shoot some more.

Nice grouping. I'm sure he'll love that gun. 300 Blackout is an AWESOME pig and deer caliber.