22800 Dewey Rd. Centerville, IA 52544 | 866.978.7103

King of Armor

Level IV Body Armor Plate (Model #1155mc) **10×12 Multi-Curve**

(9 customer reviews)


Lead Time: Same Day Shipping (M-F) When You Order by 10AM CST!

  • NIJ .06 Compliant Body Armor
  • Level 4 Body Armor is rated to defeat up to 30.06 M2AP
  • RMA’s Level IV 1155 is multi-hit capable


SKU: RMA-1155mc-10x12 Categories: ,

Sweeten the Deal, Add an RMA Trauma Pad to your order!

Trauma Pad 10x12


Due to the popularity of RMA’s Level 4 body armor model 1155 single curve hard armor plate, we are now proud to offer a 10×12 MULTI-CURVE version of the 1155 plate! RMA’s Level IV body armor plate is a cost effective, multi-curve, multi-hit rated armor plate that offers excellent Level 4 edge-to-edge protection against 30.06 M2AP, m855a1, 7.62x54r and so much more.  This brand new armor plate is professionally wrapped, water resistant, and manufactured 100% at RMA’s factory in Centerville, Iowa.

RMA is the most sought after brand of armor plates by law enforcement officers in the United States. We’ve proven to be the strongest, top engineered, and most efficient manufacturer in the country. Nobody else comes close. Owned and operated by a former police officer and US Marine who has worn armor in two careers and knows what you need.


Ballistic Threat Performance Specs

Ballistic Lab Report

Which Armor Is Right For Me?


  • Low Cost
  • 10″x 12″ Stand Alone, Edge-to-Edge Protection
  • 10 Year Manufacturer’s Warranty
  • Multi-Curve, SAPI/ESAPI-Cut
  • 8.2 lbs.
  • Thickness: 1″
  • Monolithic Ceramic & Polyethylene
  • 600 Denier Water Resistant Cover
  • Made in Centerville, IA – USA
  • RMA Hard Armor Warranty Policy


What Will Level 4 Body Armor Defeat?

According to National Institute of Justice compliance standards, level 4 body armor plates are required to defeat one 7.62×63 (30.06) M2AP round with a backface deformation of 44mm or less. In RMA’s independent testing, the model 1155 level 4 armor plate defeats between 2-3 of those rounds (depending on shot placement), while passing back face deformation requirements as well.

Each of RMA’s level 4 body armor plates are tested at NIJ approved testing laboratories, like Oregon Ballistics Lab (OBL), NTS-Wichita or others and our official test reports are listed available for anyone to see.

There are also many independent tests done on all of RMA’s Level 4 body armor plates which can been seen on RMA’s Youtube page. Or you can search Youtube for “RMA Armament Level 4 Body Armor” and see a large amount of independent tests and reviews of our armor.

RMA’s level 4 body armor plates can also defeat a wide array of other common rifle rounds such as m855a1, m855 green tip, 7.62x54r, m80 NATO, 7.62.39 msc and much more. Please see our Body Armor Ballistics Chart for a more basic representation of body armor ballistic standards.

You also may be wondering what can penetrate level 4 body armor as well? One of the most common rounds we get asked about is a .50 cal. Currently, the NIJ 0101.06/07 standard does not list .50 BMG as a test round – though in independent testing, our model 1189 level 4 body armor plate has stopped a .50 BMG from 100 yards. Here’s the evidence! It’s important to note that the plate held the round, the back face deformation and energy transfer would still be enough to kill you. Our advice? Don’t get shot by a .50 cal.

Can Civilians Own Level 4 Body Armor?

Absolutely. We sell Level 4 body armor to all law-abiding U.S. citizens, Law Enforcement Officers, First Responders, member of the Military, etc. There is only one exception. Because of state laws, Connecticut does not allow online sales of body armor. While it is legal to own armor in Connecticut as a civilian, purchasing it must be a face to face transaction.

It’s possible that more states will implement laws restricting body armor in the future, so it’s your job to know your state’s law’s regarding body armor.

However, it is illegal for any felon to own body armor in the United States.

How is Level 4 Body Armor Made?

Level 4 body armor is the highest level of body armor on the market, built to be the most rugged armor among all the levels. As such, the main components of all level 4 body armor is a ceramic strike face and a composite backer. But that’s where plates diverge between companies.

RMA builds its NIJ .06 certified 1155 level 4 armor plates with an alumina oxide ceramic strike face and a polyethylene composite backer. The ceramic serves to break apart the armor piercing rounds, which allows the composite backer to act as a catcher’s mitt and catch the remaining bullet fragments and reduce the energy impact transferred to the body.

As level 4 body armor goes up in price, it’s because it’s built with lighter weight ceramic (either silicon carbide or boron carbide) and a lighter polyethylene material used for a backer. Typically, the lighter the material, the more expensive it is. Please see the “Details” section on each of our product pages to see the materials RMA utilizes to manufacture them.

What Happens if I Drop My Level 4 Body Armor?

If you happen to drop your level 4 body armor, train with it, or are one of those guys who toss your rig around after you take it off, your armor from RMA should be just fine.

RMA’s level 4 body armor plates are built with a protective padding on the strike face to aid in the protection of the ceramic, ensuring it doesn’t crack under normal use. However, we do suggest that you take care of your armor as best you can, to ensure it performs to its highest level of protection.

What Size Body Armor Do I Need?

You can figure out what size body armor plate you need with a tape measure. You want the armor plate width to be just inside your nipples. As far as the height of the body armor is concerned, you want to measure from the top of the sternum down to one or two inches above the belly button – when you are sitting down, relaxed.

A majority (75-80%) of people wear a 10×12 or a multi-curve medium.

Can I leave RMA Body Armor in My Car?

One of the most common body armor questions we get is in regards to our body armor’s temperature sensitivity. Simply put, RMA’s body armor will continue to work as intended in just about any temperature environment. During NIJ .06 certification testing, each plate is left in a temperature chamber for two weeks, where the temperature changes periodically, from temperatures as low as 5 degrees fahrenheit to a high of 194 degrees. The varying temperature changes over those two weeks ensure that the materials used in building armor plates can maintain their form and function. The temperature test is done on each test before it is ballistically tested for compliance.

So can you leave your RMA body armor in the trunk of your car in Texas, Florida, etc and rely on it to perform? Simply put. Yes.


**United States law restricts possession of body armor for convicted felons. Many U.S. states also have penalties for possession or use of body armor by felons. RMA Armament, Inc., is also unable to ship any body armor plates, Shields, etc. to the state of Connecticut. By purchasing body armor from RMA Armament, Inc., you are certifying that you have not been convicted of any crime that would restrict you from being able to purchase or possess body armor under any Federal or State laws. Furthermore, you are acknowledging that you do not intend to use the body armor for any criminal purpose. RMA Armament, Inc., does reserve the right to refuse to sell body armor to any person.


9 reviews for Level IV Body Armor Plate (Model #1155mc) **10×12 Multi-Curve**

  1. Anonymous (verified owner)

    Came well packed and clean. Hopefully will never need to put them to the test but their heft and thickness are reassuring nonetheless.

  2. Chris Abbett (verified owner)

    Quality product for a great price

  3. Steve (verified owner)

    Seems like the best product for your buck, hopefully I never have to test it. The only thing I left a star off for was because the nylon/neoprene/whatever cover was damaged and separating at the edges of the plate. Not a big deal I think because it’s in a carrier, so I didn’t return it, but overall almost a perfect order. Easy to overlook because of a very reasonable price.

    • RMA-Webmaster (store manager)

      Steve, thank you for your order and your review. We apologize for tear in the lycra cover, which, unfortunately occurred in transit. While it doesn’t affect the ballistic integrity of the plate, you’re more than welcome to reach out to customerservice@rmadefense.com if you’d like a replacement.

  4. Joseph Rodriguez (verified owner)

    Best armor ever!

  5. bravozero588 (verified owner)

    Decided to get the multicurve version of the 1155’s I already have and like quite a bit. Once they arrived, I took my older single curve plates out of my Defense Mechanisms MEPC and popped these multicurve plates in, and my goodness do they make a world of difference in comfort. The curves at the top and bottom of the plate press it against you so you feel the entire plate resting against you. They weigh the same and fit the same in the MEPC. The only negative I’ll give the plates is the QC could be a little better, both plates had different MFG dates and one of them is a few millimeters taller, while the other had a somewhat sharp edge on the lower left corner which I put some electrical tape over in case it tears the plate fabric. Other than that, these are a big win and I hope RMA sells the sh*t out of these.

  6. Andrew Beveridge

    Incredibly impressive bang-for-your-buck when considering this product’s level of protection, comfort, and customer service. RMA did an amazing job getting an issue with my order corrected quickly and my order shipped even more quickly! I’ve already recommended RMA to my friends and will continue to use them for any future armor purchases!

  7. Mike B. (verified owner)

    Fits better than gen 1 single curve plates. Same weight, size and thickness. Awesome company and fast ship times.

  8. sanleunam (verified owner)

    Having the gen1 1155 for almost a year now and they are great but as soon as they announce the new ones I had to upgrade. The plates in itself are great the new Multicurve makes a huge diference when wearing it all day. For reference I’m 5 10″ 190lb it provides all the coverage for my needs. The reason why I gave it 4 out of 5 stats is that on my 1st order UPS manage to damage the plates not RMAs fault, on the second go around the plates were better packaged and protected but one of the plates came with a small nick in the edge (cover). Then again this is all part of the shipping process at times and with the Covid situation I think RMA provides the best quality plates for the price without the insane lead times of other companies. Definitely will come and get another pair in the future.

  9. smith17qrf (verified owner)

    Plates are very comfortable. Same weight as gen1 #1155 single curve. Fits well in multiple carriers. Great product, phenomenal customer service, and shipping was high speed AF. As a former Operator I Trust My Life To RMA.

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