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Spartan Armor Systems AR550 Level III+ Armor NIJ Certified with Spartan Sentinel Plate Carrier

Package includes both front and back AR550 shooters cut steel armor plates with a single curve, with full coat of Encapsuloc™ anti-fragmentation coating, two 6x6 side plates (base coat) and Spartan Sentinel Plate Carrier.


Spartan AR550 Body Armor and Sentinel Plate Carrier Package

  • Durable emergency drag handle

  • Anti-Slip shoulder padding w/ velcro

  • Side release buckles on internal waist strap

  • Padded mesh separators for the interior of carrier for breathability

  • Removable cummerbund with side plate pockets for 6x6 and 6x8 side plate armor

  • Velcro in front of the Carrier is 8x4

  • Velcro on the back of the Carrier is 9x3

  • Stronger carrier material that can withstand through wear and tear over a long period of time

  • 1000 denier

  • Bottom loading

By purchasing you will receive:

  • Set of Two 10x12 AR550 Body Armor Single Curve, Full Coat
  • Set of Two AR550 Side Plates Base Coat
  • One Sentinel Plate Carrier (your choice in color)

Buy Body Armor - Level III+ Spartan AR550 Armor

We’ve taken our Level III Body Armor to a NEW level! Spartan Armor Systems™ is pleased to introduce our AR550 Body Armor!  With a 10% increase in ballistic core hardness, our level III+ AR550 armor defeats higher velocity threats such as XM193, M855, and M80! We’re special rifle threat validated!


Our AR550 body armor is NIJ level III rated but has undergone special threat testing to achieve a level III+ rating, click here to learn more. NIJ Certification applies to AR550 Shooters and Swimmers Cut Single Curve Full Coat armor plates. Note: AR550 side plates are NIJ compliant, are not NIJ certified. 



Our AR550 armor hits the “sweet spot” in the Brinnell Hardness (BHN) range. With a core hardness of approximately 545-560 BHN, we have found our  ballistically rated variant of AR550 that we use is perfect for defeating higher velocity threats, while not exposing the armor plate to extreme stress due to forming.

Our AR550 Level III+ armor has our GEN2 lower cut radius. With a 10% increase in core hardness, this ballistic grade steel is much harder than AR500, but not too hard to cause severe stress while forming.

With higher velocity rifle threats commonly present throughout the United States, we’ve developed this AR550 armor to specifically defeat some common threats such as 5.56 x 45 XM193, 5.56 x 45 M855 /SS109 and 7.62 x 51 (.308 Winchester) at a rated velocity of 3,100 fps or less. Additionally, we’ve successfully defeated these threat profiles from Close Quarters Battle (CQB) distances…repeatedly!

Level III+ Side Plates:   6″ x 6″ 

Chest Plate Weight (per plate):   10x12 AR550 Shooters Cut Full Coat: 8lbs 10oz.


Side Plate Weight (per plate):    6×6 approximately 2lbs 9oz (base coat)

Thickness:   .25″ AR550

Level III+ AR550 Certified Plates and Sentinel Plate Carrier Package

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