Reviews

So, it's very expensive, especially as it doesn't come with a base mount required for your optic. So it's about $25 bucks more than the optic that sits on it from AT3 (wild). I needed an ambidextrous solution, and it works well for snuggling up next to your main optic. It took me a minute to figure out all the mounting screws because none of my parts came with directions, just bags of screws.

The stock was a little tight, but function and works well. No problem installing took all of 1 min to apply. Would recommend but I feel like this needs to be broken in to move a little smoother.

First of all, the quality of the magnifier and feel is unreal. It feels super sturdy. FOV is amazing and really gives you a clear picture of the red dot. The flip motion is such a solid feel, does not feel flimsy whatsoever and having no button or pull back feature to flip back and forth makes it so worth it!
The 1/3 co-witness riser is perfect for having a flip up iron sight, fits over it perfectly. You can still use the flip up sight with the magnifier flipped to the side. Definitely happy with the AT3 Delta 3x magnifier!!

Currently running a Vortex Strikefire 2 but it's a bit long so I'll be ordering the AT3 Alpha Micro red dot to shorten up the top half, especially if you don't a free-floating handguard.

This handguard is great! Mounting is easy and straightforward, it feels sturdy, and is comfortable to hold. My Silencerco 46M fits inside (barely), and I am actually able to use the QD function using a flathead through the m-lok. The suppressor sits really close to the handguard, so the last two sets of mounting slots are essentially useless for me. If you use a thinner can, you shouldn’t have that problem. I’ve got close to 300 rounds through it since mounting the handguard and everything has stayed tight. Be advised, it does get hot fast if you have a fat suppressor. And I do mean fast! I would absolutely recommend to anyone trying to recess their suppressor.

Fits my omega 300 perfectly.

I purchased the AT3 4x magnifier to run on CETME-C behind a Holosun 1-MOA red dot. It’s a love/hate relationship with the 4x. Glass is crystal clear, and the 1913 QD mount is firm on the rail. Biggest issue was finding a happy medium between eye relief and distance between magnifier and red dot. The flip-to-side function is stiff which, on one hand, is great and will not accidentally flip. On the other hand the button is in a tight spot even with a riser it’s a small struggle, but altogether operates as it should. The last issue I believe can be fixed by myself with a little thread lock and tension - the magnifier has some play inside the round clamps. This of course creates issues with holding zero, but something I believe I could fix. Overall the best features are the clear sight picture (once you find the eye relief) and the variable magnification. Looking forward to more AT3 products!

I ordered the KAK Ind. 14.5 Inch barrel. I actually just had some range therapy yesterday. It held a tight, one inch group at 50 yards. And that's with some movement on my end. I also purchased and added a Breek Arms flash hider & blast mitigation device, to my build. I love the look and performance. Really pleased with my purchase from AT3 Tactical! You all have great customer service! I truly appreciate that!

Magpul makes awesome products

Grip plug worked as advertised.

Update (7/11/24):
While the wrench was defective, I wanted to update my review to add that AT3 customer support responded back to me very fast asking if I wanted a refund or a replacement. I knew I wanted to buy other things they have so I asked if I could get credit towards another purchase (something they can make happen very fast and are very much motivated to do). I ended up getting my own code for the value of the wrench and got other items. So 5-stars for customer service, but the wrench itself will remain 1-star.

Original Review/Comment (7/8/24):
Tab broke on first pull on castle nut, tried the other side and severely struggled to get a good set onto it and then applied pressure and it slipped, 2nd time it gave out on the edges.

Got this setup for my AR 308 build and it fit the lower I got from 80 Percent Arms perfectly as well as the Magpul stock.
The quality of the buffer tube, spring and buffer in this kit is definite tops as well. Will be buying more for future builds.

Just started to build my AT3 receiver set. The kit is great and the finish is exceptional. Looking forward to finishing it.

I reluctantly purchased this rail as it had the features i wanted. Free Float, index tabs, and M Lok. Looking at the price I was on the fence and tried to find something else with the same features for less money, but couldn't. So glad I did it. It was a perfect fit and exactly what i was looking for.

A great upgrade for the glock 48. The flat face makes A big difference. Very well Made part. At a fair price.

Shipping was quick, well packaged, and assembly took about 5 mins max. Definitely made my AR lighter compared to the magpul moe m lol hand guards it originally had.

Got burnt bronze came in quick looked great tight snug fit with a faxon barrel no sloppy wobble or gaps in hand guard to upper
Will order again soon

Took about 50-100 rounds to break-in, jammed up nearly every time. After 50+ rounds it broke-in and became flawless, so give it time, use cheap rounds to get it broke-in. In the picture I have my 5.56 BCG in a dedicated spot since it's a lot cheaper to fire .22LR, so the CMMG BCG stays in the Upper. I'm using a PSA AR-15 with 1/7 Twist NATO barrel. This should fit any standard AR-15 upper.

A few things to note:
• .22LR runs "dirtier" than 5.56 or .223. DO NOT skip cleaning your rifle, it will be less forgiving after shooting .22LR, just the nature of the round.
• If I had to, I'd go and just buy the kit that had the 3 magazines. It's hard to find these for some reason and any alternatives just suck. Get the 3 mag pack and be happy.
• I have the CMMG Anti-Jam charging handle (bought it separately), and sweet tap dancing Christ that thing is garbage. Just use your stock charging handle. Maybe I got a bad one but I get repeated failures as soon as I try using it, even well after the break-in period. I tried 10 rounds back to back between my stock PSA charging handle and the CMMG - each when the magazine only contained 10 rounds to eliminate the mag pressure variance and it was the CMMG charging handle that induce a failure every time. Your mileage may vary.
• 36 Grain is recommended, but don't be afraid to use 40 or 32 if it's all you can find. I broke mine in with 40 grain as none of the 8 gun shops around me had 36 grain.
• Note that the BCG separates, you WILL have your first 50+ rounds fail to eject, it'll be fine eventually - and remember that it separates when you go to clean out your BCG (bolt carrier group).
• Your Forward Assist will NOT work with this unless you get the adapter with the Echo kit (I think that's the kit name). Honestly, you probably won't need it because I didn't when I put 500 rounds down in its first day. I cleaned the barrel and BCG every 200-ish.
• I recommend switching your BCG to 5.56 or .223 and fire a round or two, the extra pressure after shooting dirty .22LR does something for it, I just can't recall what at the time of writing this.
• Some reviews state "wobbling" of the magazine, I have no issues myself.
• There are notes elsewhere on the internet to not run in a .223 Wylde barrel config - I have no experience with said barrel so be mindful of that note.

Personal thoughts:
• This is a great product, its easier than having another upper on-hand to switch ammo types, I've even got a slot in my gun case just for the BCG to field swap.
• Some may state it's better to have a dedicated .22LR platform, and if 100m+ accuracy is your goal, then yeah, probably. But having the ability to change in literally seconds, not have to carry 2 rifles, and not having to buy more scopes/lights/magnifiers/etc, is the real benefit here.
• Buy if you: want to utilize your AR15 even more, if you want to shoot cheaper, don't want to buy more scopes, don't want to bring another gun to the range, if you want to use your gun but your girlfriend just wants to shoot the "fun 22 rounds", and if you don't want to spend $400+ for another rifle (just to then buy every attachment again).

Never disappointed when ordering from AT3. Great product, price and fast shipping.

Quality and affordable! 10/10

I love Ballistic Advantage I have 2 of these 12.5 and a 16 SS heavy Fluted all of them are accurate. They hold up well. I highly recommend one if you have got one also check out my YouTube channel Delta D80.

great quality charging handle only one i run have 4 of them now and love them the bcg is also good quality have 3 of those and have never had any issues with them AT3 is a great company and have multiple orders through them customer service is awesome and shipping is super fast AT3 is my go to for great priceing and quality parts

Bought new. When insalled the rubber end is up against the small spring metal tip that holds the buffer in the tube and presses hard to where the rest of the rubber pushes out and locks the upper to the lower. I couldnt open it until i stick something in to push the buffer back. Wish I had my $ back. Need to have better design of harder rubber attachment or plastic. And its hard to remove unlike the old buffer and spring. It'd be easier to remove the stock to get it out. All around pain in the butt. And the pictures are after i had it out for a while. After storing in the same position...good luck opening the back side only.

The .750 gas block was a perfect sng fit on my barrel. I had a couple of questions, and Alvin got right back to me with the proper torque specs I needed. The carbine length gas tube and block tube fit perfectly under a very tight 9" keymod handguard. Good products, good prices, fast shipping, and really great people, should you need a little advice or assistance. AT3 is always where I start my search for parts, etc. You should too.

I chose this castle nut due to the appearance and light weight. I assembled this castle nut in conjunction with a Radian end cap featuring a titanium swivel QD. The finished assembly looked phenomenal and I am well pleased. I used a designed wrench and torqued to 40 foot pounds. This castle nut performs as advertised and I highly recommend. I did use 3M painters tape on the nut to eliminate any scratches. If you are looking for an added touch on your build, this nut rocks!

No complaints whatsoever. Between this and the stealth buffer system I installed, recoil has been reduced by half.