Rattlesnake Tactical 34-Round Glock-Compatible Magazine Review

In this Rattlesnake Tactical magazine review, Richard Johnson evaluates the new 34-round 9mm mags designed to work with double-stack Glock pistols. The magazines, each loaded with Blazer Brass ammunition, were provided to the author for free with the intent that they would be reviewed. Some links on this page are affiliate links. You can buy the RTAC magazines here for less than $6.

If you’re in the market for a higher-capacity Glock magazine and don’t want to pay a premium, the new Rattlesnake Tactical 34-Round Glock-compatible magazine is an option you want to consider.

Glock owners have more options than ever, but true reliability, price, and fit aren’t guaranteed just because a mag is Glock-compatible. Rattlesnake Tactical rolled out its RTAC-9-MAG-34, designed to handle 34 rounds of 9mm, for shooters who need more shots without switching mags, whether you’re running a pistol or a PCC.

It’s U.S.-made, fits a wide range of Glock-pattern models and launched exclusively at Ammunition Depot. Here’s a breakdown of how it performed for me, how it sizes up against two competitors and whether I think it’s worth your money. Note: Rattlesnake Tactical is abbreviated RTAC.

RTAC 34-Round Magazine Details

Rattlesnake Tactical (RTAC) collaborated with Ammunition Depot to create the RTAC-9-MAG-34, an extended 9mm magazine for Glock pistols and Glock-compatible firearms.

Designed to hold 34 rounds of 9x19mm Parabellum ammo, these polymer magazines are made in the U.S.A. According to the companies, the intent of the design is two-fold: provide “unmatched reliability” at a remarkably affordable price. They have witness holes on their back.

The price? The MSRP is $19.99, and Ammunition Depot is offering them for a limited time through this link for only $5.99. No, that’s not a misprint. The 34-round magazines are being offered for less than $6 each right now.

Which Glock Pistols Does the RTAC Extended Mag Work In?

The RTAC 34-round magazine should work in any 9mm Glock pistol designed to take the company’s standard double-stack mags. The company specifically lists these models as being 100% compatible:

• G17 and G17L
• G18
• G19 and G19X
• G26
• G34
• G45
• G47

The company also states the magazines are “…compatible with any handgun or Pistol Caliber Carbine (PCC) that accepts double-stack 9mm Glock magazines, including most Glock-pattern clones.”

Ammunition Depot, the company selling the RTAC magazines, further states the magazines work with the Kel-Tec Sub2000 and Ruger PC Carbine (assuming both are equipped with the Glock magazine wells.) However, the company does not recommend using these magazines in the Ruger PC Charger.

Where are the RTAC Magazines Made?

The Rattlesnake Tactical 34-round 9mm Glock-pattern magazines are made in the U.S.A.

Are These Magazines Backed by a Warranty?

Yes. RTAC offers a lifetime guarantee on these magazines.

According to the Rattlesnake Tactical Warranty:

“Rattlesnake Tactical 34-Round 9mm Magazine Designed for GLOCK Pattern Double-Stack Firearms are backed by our comprehensive Lifetime Warranty.

This warranty covers manufacturer defects, normal wear and tear, and unintentional damage, as determined solely and absolutely at the discretion of Rattlesnake Tactical LLC. It reflects our commitment to quality and reliability in the field.”

Full details are available here: https://www.rattlesnaketactical.com/guarantee

Third Party Testing

RTAC provided me with the results of third party testing the company commissioned. The general parameters of the test included two magazines with a total of 510 rounds of 115-grain FMJ ammo through each magazine using the Glock 47, Glock 19 Gen4 and Glock 17 Gen5 pistols. The testing also included a magazine from two different, unnamed competitors.

Magazine	Failure to Feed	Failure Rate
RTAC (sample A)	1	0.20%
RTAC (sample B)	2	0.39%
Competitor 1	7	1.37%
Competitor 2	14	2.75%

The first RTAC magazine experienced a single failure to feed (0.20% failure rate) while the second 9mm magazine suffered two failures to feed (0.39% failure rate.)

Contrast that to the first competitor that experienced 7 failures to feed (1.37% failure rate) and the second that had 14 failures to feed (2.75%).

This looks good for the Rattlesnake Tactical 34-round Glock-compatible magazines, but the testing and comparison could be much improved. Watch for a more thorough extended Glock magazine comparison from me in the future.

The testing also conducted drop tests: loaded mags dropped onto a concrete floor from a height of 3’. RTAC magazines survived all drops on the sides and bases. All magazines – including the competing magazines – failed when dropped so the feed lips hit the floor first.

The testing company also used an unknown quantity of ammunition to check the RTAC magazines in older generation Glock pistols. No issues were found during this testing.

Range Testing the Rattlesnake Tactical Glock-Compatible Mags

Glock pattern pistols chambered for the 9x19mm Parabellum cartridge are nearly ubiquitous today. In addition to the guns manufactured by the company, there are dozens of models made by other companies that are compatible with the third-generation Glock pistols. And then there are carbines as well.

For my testing, I selected two of the most popular handguns available today: a Glock 17 and a Glock 19. Both are my personally-owned pistols. The G17 is a Gen3 and the G19 is a Gen4.

You can read my Glock 17 review for more information on that pistol.

I also have a Palmetto State Armory 9mm carbine that feeds from Glock magazines. As a high-capacity magazine makes perfect sense in a carbine, it seemed like the perfect platform for testing the RTAC magazines.

I tested for functioning in the firearms. As the company’s own internal testing showed that the magazines are unlikely to survive a direct drop onto concrete when the magazine is full and the feed lips strike first, I did not feel it was necessary to re-test this.

Glock Pistol Testing

I ran 100 rounds of Blazer Brass 115-grain FMJ ammo through each magazine, through each gun, for a total of 400 rounds. The guns were 100% reliable with the Rattlesnake Tactical 34-round magazines.

Slides locked back when the RTAC magazines ran dry, the magazines dropped free when I mashed the button and they seated easily when inserted.

PSA Carbine Testing

I ran an additional 200-rounds (100 for each magazine) through the carbine. This time I experienced one failure…and I’m not sure it was the fault of the magazine.

Somewhere around round #60 in the first magazine, the gun fired and the spent case was ejected. The new round was stripped off of the top of the magazine, but it appeared to have hung up on the feed ramp of the rifle. This caused a gouge in the bullet and pushed the projectile deep into the case. All other rounds fired properly.

I experienced the same malfunction when using an ETS 32-round Glock-pattern magazine in the carbine. Is the problem the magazines or the gun? Impossible for me to say, but I am thinking that it is a gun issue. I will note, however, that I have experienced no problems with the rifle when using factory Glock magazines of any size: 15-, 17- and 33-round OEM magazines.

Is the RTAC Magazine Worth the Money?

The Rattlesnake Tactical 34-round Glock compatible magazine is a great value, especially when you look at the price and what you’re getting for it. I’m not sure you’ll find another extended 9mm magazine that actually works and costs this little, at least not one that’s made in the U.S. and seems to hold up to realistic use. Performance-wise, the failure rates are very low – better than some competitors I’ve tested.

Reliability is my main concern for any Glock extended magazine, and based on my testing, this one mostly delivers. There was a hiccup in the carbine with one magazine, but I’m not convinced that was the mag’s fault. Both mags ran fine in my G17 and G19. Third-party testing seems to back that up. Fit, lockback, and general handling all checked out in actual guns, not just on paper.

So, is the Rattlesnake Tactical 34-round Glock-compatible magazine worth the money? Yes, it is. For under six bucks right now, you’re getting a 9mm double-stack magazine that works, fits most Glock-pattern pistols and carbines, and doesn’t feel like a gamble. Just remember, no aftermarket mag is indestructible, especially if you drop it feed lips first on concrete, but for range use or as a cheap backup, it’s honestly a smart buy.

If you need extra capacity and don’t want to pay OEM prices, this one’s hard to beat for the price. The Rattlesnake Tactical 34-round Glock compatible magazine is a great value for Glock owners who want function without the markup.

You can purchase these magazines here.