Enhanced
Combat
Performance
OPS-CORE

Sentry Helmet

The Ops-Core Sentry offers the same level of protective head coverage as the US Army ACH/ ECH with improved interoperability between communication headsets, visors and accessories for mandible protection. It also provides better hearing localization and attenuation than the ACH with a modified ear area shape, and is compatible with Ops-Core RAC-1 headset and other in-ear communication devices. The shell is made in three different ballistic material versions listed below.

Key Features:

  • XP Shell: Built using hybrid composite ballistic materials that weigh a ½ lb. less than the ACH while meeting all of the ballistic performance requirements of the US Army’s CO/PD-05-04 2007 specification
  • ST Shell: Provides the same level of 17 grain / 1.1 FSP protection, as well as NIJ-IIIA 9mm resistance to penetration (RTP) but at a lower price that is more competitive with traditional aramid helmet costs
  • LE Shell (Currently in field trials): Built specifically for defeating handgun threats typically encountered by the law enforcement community by meeting stringent shell backface deformation (BFD) limits that are not required by the NIJIIIA 0106.01 standard alone
  • The Ops-Core Worm-Dial adjustable fitband with replaceable front, nape and side pads quickly detaches to allow convenient donning / doffing of COMMs headsets with headbands, while being more compact

Article data

Art. Name:
OPS-CORE Sentry Helmet
Art. Nr:
-

Available colors

Other colors & patterns are available on request

PERFORMANCE

BLUNT IMPACT PROTECTION

Ops-Core helmets provide head protection against low speed impact trauma in an extreme range of temperature conditions when subjected to stringent US Army testing requirements.

U.S.ARMY ACH Specification CO/PD-05-04:2007

  • Threat Description: Hemi Anvil x2 Impacts: 10 f/s (3 m/s)
  • Environmental Conditions: Blunt Impact: 14°F / 77°F / 130°F (-10°C / 25°C / 54°C)
  • Test Requirement: Less than 150 Gs force transmitted to head / brain

BALLISTIC PROTECTION

 

SENTRY (XP)

SENTRY (ST)

Testing performed
in accordance with the
following specifications:

US ARMY
ACH Specication
CO/PD-05-04:2007*

STANAG
2920 Edition (2)
7/31/2003

2 grain (V50)

4200 f/s (1280 m/s)

4 grain (V50)

3475 f/s (1059 m/s)

16 grain (V50)

2475 f/s (754 m/s)

64 grain (V50)

1750 f/s (533 m/s)

17 gr / 1.1 FSP (V50)

2200 f/s (670 m/s)

2200 f/s (670 m/s)

9mm FMJ RN
(V0 at 0° Obliquity)

1400 f/s (427 m/s)
*BFD < 1.0” (25.4mm)

1200 f/s (366 m/s)

44 Mag. SJHP

 

CONFIGURATION

 

MOTO VISOR & MANDIBLE FOR SENTRY

MOTO VISOR & MANDIBLE FOR ACH

SIDE ARMOR

GUNSIGHT MANDIBLE

SLAPP PLATE






RAC-1 HEADSET

FAST HELMET COVERS

MISSION CONFIGURABLE HELMET COVER

LUX LINER KIT

WORM-DIAL LINER KIT






HEAD-LOC CHINSTRAPS

ACH/FAST ARCs

RAIL ADAPTERS

NVG SHROUDS

COUNTERWEIGHT






 

SIZING

SIZING

 

M

L

XL

XXL

Head Circumference

53 - 57 cm
20 7/8 - 22 1/2 inch

57 - 59 cm
22 1/2 - 23 1/4 inch

59 - 61 cm
23 1/4 - 24 inch

61 - 64.5 cm
24 3/8 - 25 3/8 inch

Head Size (US)

up to 7 1/8 inch

up to 7 3/8 inch

up to 7 5/8 inch

up to 8 1/8 inch

Size Distribution

32.3%

44.4%

20.0%

2.8%

WEIGHT

 

M

L

XL

XXL

XP – Shell Only


XP – Complete

2.00 lbs (906 g)


2.83 lbs (1285 g)

2.12 lbs (963 g)


3.00 lbs (1363 g)

2.25 lbs (1022 g)


3.12 lbs (1415 g)

2.38 lbs (1082 g)


3.27 lbs (1485 g)

ST – Shell Only


ST – Complete

2.00 lbs (906 g)


2.83 lbs (1285 g)

2.12 lbs (963 g)


3.00 lbs (1363 g)

2.25 lbs (1022 g)


3.12 lbs (1415 g)

2.38 lbs (1082 g)


3.27 lbs (1485 g)

LE – Shell Only


LE – Complete

2.34 lbs (1061 g)


3.17 lbs (1438 g)

2.45 lbs (1111 g)


3.33 lbs (1510 g)

2.61 lbs (1184 g)


3.48 lbs (1579 g)

2.77 lbs (1256 g)


3.66 lbs (1660 g)

COVERAGE

 

M

L

XL

XXL

Head Coverage


Shell Surface Area

104.7 in² (675 cm²)


171.7 in² (1108 cm²)

112 in² (723 cm²)


179.7 in² (1159 cm²)

120.2 in² (775 cm²)


191.2 in² (1233 cm²)


 

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