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Dimensions
  Length
mm		 Width
mm		 Height
mm		 Circumference
mm
   Small 240 mm 210 mm 152 mm 500-520
   Medium 248 mm 215 mm 155 mm 520-560
   Large 255 mm 222 mm 168 mm 560-600
   Xlarge 270 mm 239 mm 173 mm 600-640
Tolerance: ± 5mm
 
Weight
Bullet Fragment V50 (1.1g) Weight (gms.)
NIJ Level V50 (1.1g) Small Medium Large X-Large
9 mm 570 m/s 1300 1350 1400 1500
III A 600 m/s 1400 1450 1550 1650
Tokarev 650 m/s 1500 1550 1650 1750
Tolerance: ± 50 gms.
Additional 60 gms. for #4 suspension system for all sizes
Other Helmet Models
    Boltfree
    G-Factor
    Aralyte
    Advanced Combat
    PASGT
    Paratrooper
    Tank Crew
    Mine Clearance
 
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