Levels of protection

Features of glass

Test parameters

Standard	Protection Level	Thickness	Weight	Bullet Type	Bullet Speed
GOST R 51136	2 CR	16,5 mm	37 kg/m²	7,62×25 PST	430 m/s
	3 CR	29 mm	67 kg/m²	7,62×39 PS	725 m/s
	4 CR	36 mm	85 kg/m²	5,45×39 PP	900 m/s
	5 CR	39 mm	92 kg/m²	7,62×39 TUS	725 m/s
				7,62×54 LPS	830 m/s
	5а CR	46 mm	110 kg/m²	7,62×39 BZ	735 m/s
	6 CR	67 mm	155 kg/m²	7,62×54 ST-M2	830 m/s
	6а CR	67 mm	155 kg/m²	7,62×54 BZ B-32	815 m/s

EN 1063	BR 4 NS	22 mm	50 kg/m²	.44 Rem Magnum	440 m/s
	BR 6 NS	39 mm	92 kg/m²	7,62×51 NATO ball	830 m/s
				5,56×45 SS109	950 m/s
				5,56×45 M193	950 m/s
	BR 7 NS	67 mm	155 kg/m²	7,62×51 AP (M61)	820 m/s

STANAG 4569	Уровень 1	39 mm	92 kg/m²	7,62×51 NATO ball	833 m/s
				5,56×45 SS109	950 m/s
				5,56×45 M193	950 m/s
	Level 2	50 mm	116 kg/m²	7,62×39 BZ	900 m/s
	Level 3	82 mm	190 kg/m²	7,62×54 BZ B-32	854 m/s
				7,62×51 AP (WC core)	930 m/s
	Level 4	128 mm	290 kg/m²	14,5×114 BZ B-32	911 m/s