GOST Armor Standard (Russia)

GOST R 50744-95 is the Russian Federation standard for body armor. Prior to the 2017 revision, the threat levels ran from 1 to 6. Noticeably, it included threats with the suffix A, which denote heightened ratings as opposed to lowered ratings in the NIJ standard.

The old (pre-2017) standards are as follows:

Armor LevelProtection
Class 1
9×18mm Makarov7.62×38mmR
This armor would protect against five hits, fired from 5 meters, of:
* 5.9 g (91 gr) 9×18mm Makarov 57-N-181S steel-core bullets at a velocity of 305–325 m/s (1000–1066 ft/s)* 6.8 g (105 gr) 7.62×38mmR 57-N-122 lead core bullets at a velocity of 275–295 m/s (902–968 ft/s).
Class 2
5.45×18mm7.62×25mm Tokarev
This armor would protect against five hits, fired from 5 meters, of:
* 2.5 g (38.6 gr) 5.45×18mm steel-core MPC 7N7 bullets at a velocity of 310–335 m/s (1017–1099 ft/s)* 5.5 g (84.8 gr) 7.62×25mm Tokarev steel-core bullets at a velocity of 415–445 m/s (1361–1460 ft/s)
Class 2A
12 gauge
This armor would protect against five hits, fired from 5 meters, of:
* 35 g (540 gr) 12 gauge lead-core “Hunter” shotshells at a velocity of 390–410 m/s (1279–1345 ft/s)
Class 3
5.45×39mm7.62×39mm
This armor would protect against three hits, fired from 5.10 meters, of:
* 3.4 g (52 gr) 5.45×39mm 7N6 hardened steel-core bullets at a velocity of 890–910 m/s (2920–2985 ft/s)* 7.9 g (122 gr) 7.62×39mm 57-N-231 hardened steel-core bullets at a velocity of 710–740 m/s (2329–2427 ft/s)
Class 4
5.45×39mm
This armor would protect against three hits, fired from 5.10 meters, of:
* 3.4 g (52 gr) 5.45×39mm 7N10 hardened steel-core bullets at a velocity of 890–910 m/s (2920–2985 ft/s)
Class 5
7.62×54mmR7.62×39mm
This armor would protect against three hits, fired from 5.10 meters, of:
* 9.6 g (148 gr) 7.62×54mmR 57-N-323S steel-core bullets at a velocity of 820–840 m/s (2690–2756 ft/s)* 7.9 g (122 gr) 7.62×39mm 57-N-231 (PS) hardened steel-core bullets at a velocity of 710–740 m/s (2329–2427 ft/s)
Class 5A
7.62×39mm
This armor would protect against three hits, fired from 5.10 meters, of:
* 7.4 g (114 gr) 7.62×39mm 57-BZ-231 (BZ API) armor-piercing incendiary bullets at a velocity of 720–750 m/s (2362–2460 ft/s).
Class 6
7.62×54mmR
This armor would protect against three hits, fired from 5.10 meters, of:
* 9.6 g (148 gr) 7.62×54mmR ST-M2 hardened steel-core bullets at a velocity of 820–840 m/s (2690–2756 ft/s)
Class 6A
7.62×54mmR
This armor would protect against three hits, fired from 5.10 meters, of:
* 10.4 g (160 gr) 7.62×54mmR 7-BZ-3 (B32 API) armor-piercing incendiary bullets at a velocity of 800–835 m/s (2624–2739 ft/s)

With the 2017 revision, the standards have changed significantly. Threat classes now range from BR1 to BR6. ‘A’-suffixed classes have been eliminated, and their test threats have been either merged into the new categories, such as Classes 6 and 6A being moved into Class BR5, or removed entirely, as in the case of Class 2A. Additionally, several of the threat levels have been increased in difficulty with the introduction of new test threats; most notably is the introduction of Class BR6, which requires the tested armor to survive three hits of 12.7×108mm B32 API. In spite of the more difficult test threats, the 16mm back-face deformation limit remains unchanged.

The updated standards from the 2017 revision are as follows:

Armor LevelProtection
BR1
9×18mm Makarov
This armor would protect against five hits, fired from 5±0.1, meters of:
* 5.9 g (91 gr) 9×18mm Makarov 57-N-181S steel-core bullets from a Stechkin APS at a velocity of 335±10 m/s (1199±33 ft/s)
BR2
9×21mm Gyurza
This armor would protect against five hits, fired from 5±0.1 meters, of:
* 7.93 g (122 gr) 9×21mm Gyurza 7N28 lead-core bullets from an SR-1 Vektor at a velocity of 390±10 m/s (1279±33 ft/s)
BR3
9×19mm Parabellum
This armor would protect against five hits, fired from 5±0.1 meters, of:
* 5.2 g (80 gr) 9×19mm Parabellum 7N21 hardened steel-core bullets from an MP-443 Grach at a velocity of 455±10 m/s (1492±33 ft/s)
BR4
5.45×39mm7.62×39mm
This armor would protect against three hits, fired from 10±0.1 meters, of:
* 3.4 g (52 gr) 5.45×39mm 7N10 hardened steel-core bullets from an AK-74 at a velocity of 895±15 m/s (2936±49 ft/s)* 7.9 g (122 gr) 7.62×39mm 57-N-231 hardened steel-core bullets from an AKM at a velocity of 720±15 m/s (2362±49 ft/s)
BR5
7.62×54mmR
This armor would protect against three hits, fired from 10±0.1 meters, of:
* 9.4 g (148 gr) 7.62×54mmR 7N13 (PP) hardened steel-core bullets from a SVD sniper rifle at a velocity of 830±15 m/s (2723±49 ft/s)* 7.9 g (122 gr) 7.62×54mmR 7BZ3 API (armor-piercing incendiary) bullets from a SVD sniper rifle at a velocity of 810±15 m/s (2657±49 ft/s)
BR6
12.7×108mm
This armor would protect against three hits, fired from 50±0.5 meters, of:
* 48.2 g (743.8 gr) 12.7×108mm 57-BZ-542 API (armor-piercing incendiary) bullets from an OSV-96 sniper rifle at a velocity of 830±20 m/s (2723±65 ft/s).

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