Ops-Core FAST User manual
For FAST®Bump Helmet Systems
This product is covered by one or more patents.
For more information visit www.gentexcorp.com/patents
H11246 REV. A
Gentex Corporation 324 Main Street Carbondale, PA 18407
© 2023 Gentex Corporation. Ops-Core is a registered trademark or Gentex Corporation or its afliates.
ARC is a trademark of Gentex Corporation or its afliates
BUMP HELMET
OPERATOR’S MANUAL
TABLE OF CONTENTS
Introduction
Helmet System Components
Sizing Guide
Retention System Operation
Accessory Integration
Modular Bungee Shroud
PowerPath ARC Rails
Cable Integration
Exterior Loop
Comms Headsets
Maintenance & Storage
Replacement Parts
Operator Notes
Warning & Warranty
4
5
6
7
8
9
10
11
12
13
14
15
16
19
3
INTRODUCTION
ABOUT YOUR OPS-CORE®FAST®BUMP HELMET SYSTEM
The Ops-Core FAST Bump Helmet System is an innovative and advanced headborne protection platform
providing protection from blunt impact, and environmental threats. The FAST Helmet System seamlessly
integrates with Ops-Core total headborne system solutions including situational awareness, optical, and
respiratory protection.
4
HELMET SYSTEM COMPONENTS
Modular
Bungee Shroud Exterior Loop
Shroud Bungee
Low-Profile
Head-Loc™
Chinstrap
PowerPath
ARC Rail
Front Brow
Comfort Pad
Adjustable
Comfort Pads
Vented
Lux Liner
Adjustable
Comfort Pads
Universal
Fitband
Occ-Dial™
Adjustment Knob
5
HELMET SIZING GUIDE
X-LARGE
FAST HELMET SIZE CHINSTRAP SIZE (in)
MMEDIUM
L
XL
LARGE
XXL XX-LARGE 29-32.3
27.5-30.5
26-29
24.5-27.5
CHINSTRAP SIZING GUIDE
Certain head shapes may require a smaller or larger chinstrap
than the one that comes with the helmet you selected. The sizing
guide is provided for reference. If you feel a different chinstrap
size is needed, contact Ops-Core customer service.
12
13 14
15 16
17 18
19
2 0
FAST HELMET SIZE
Head Circumference (cm)
Head Circumference (in)
Head Size (US)
53 - 56
20⁄ - 22
M
up to 7
56 - 59
22 - 23¼
L
up to 7⁄
59 - 62
23¼ - 24⁄
XL
up to 7⁄
62 - 64.5
24⁄- 25⁄
XXL
up to 8⁄
13
14 15
16 17
18 19
2 0
2
1
RUN MEASURING
TAPE ALONG FRONT
EDGE OF EAR
FAST helmets have been designed from the ground up to t the largest group of users in helmet sizes that most
closely match their heads. However, there is still a small percentage of users that will not t our standard sizing
congurations. Please use the sizing guide below to determine your helmet size and your chinstrap size.
SIZING GUIDE
6
4ADJUST FRONT HEAD-LOC SLIDERS
With both hands, pull the two Front Head-Loc Sliders on the
webbing straps that come from the front temples of the helmet
toward your chin until snug.
Occ-Dial
Adjustment Knob
RETENTION SYSTEM OPERATION
1FASTEN THE CHINSTRAP
Put the helmet on and fasten the chinstrap buckle.
Rear
Head-Loc
Slider
3ADJUST REAR HEAD-LOC SLIDERS
With both hands, pull the two Rear Head-Loc Sliders on the
lower webbing straps toward your chin until snug.
NOTE: THE TECHNIQUE WORKS BEST IF YOU ONLY HOLD
THE PLASTIC SLIDERS AND DON’T TOUCH THE WEBBING.
2ADJUST THE OCC-DIAL
Use your thumb to rotate the Occ-Dial Adjustment Knob to
tighten the tband until it is comfortably snug.
Front Head-Loc Slider
7
ATTACHING ACCESSORIES TO THE HELMET
There are three ways of attaching accessories to the Ops-Core FAST Helmet: The Modular Bungee Shroud,
PowerPath ARC Rails and Exterior Loop. These three components provide convenient and secure ways to
quickly attach and detach various accessories to different positions.
ACCESSORY INTEGRATION
Modular
Bungee
Shroud
PowerPath ARC Rail
Exterior Loop Exterior Loop
Exterior
Loop
8
ABOUT THE MODULAR BUNGEE SHROUD
The Modular Bungee Shroud (MBS) mounts to Ops-Core FAST helmets using the standard 3-hole pattern. The
MBS has an integrated Night Vision Goggle (NVG) bungee that does not interfere with any other accessories,
providing a low prole option for stabilizing NVGs. The MBS also has a removable metal insert that can be
swapped out to provide different mounting solutions without completely removing the shroud from the helmet.
MODULAR BUNGEE SHROUD
ATTACHING STABILIZING BUNGEES TO NVGS
Some NVGs may require the use of the Split Rings to attach the carabiner
bungee clips.
NVGs Attached with Split Rings NVGs Attached without Split Rings
Split Rings (sold separately)
Exterior
Loop
9
ATOP RAIL
Top Rail can accommodate
Picatinny Adapters, which
connect devices compatible with
1911 Picatinny Rail, and Wing-Loc
Adapters, which provide a base
to mount a variety of headborne
accessories.
BRAIL CORNER
Rail corner allows for instant and
secure snap-in attachment of
Para-Flite and Carleton O2 masks
with O2 Single Strap Kit.
CBACK RAIL
Goggle Swivel Clips, attached
to your choice of goggles, can
quickly clip into the back rail
while allowing freedom
of rotation.
A
B
C
ARC ADAPTERS
The following adapters are commonly used for attaching accessories to
the FAST Bump Helmet: Picatinny & Wing-Loc Adapters (A), O2 Single
Strap Kit (B), and 36mm Goggle Swivel Clip Kit (C).
Picatinny
Adapter
Wing-Loc
Adapter
O2 Strap Kit
(Not Included)
36mm Goggle Swivel Clips
(Not Included)
Cable Tie RoutingCable Tie Routing
Applique / Cable Clip
Attachment
Mandible
Attachment
Counterweight /
Battery Pack
Strap Routing
PowerPath ARC Rails are mounted to the sides of the helmet to allow for quick yet secure donning or dofng of
various headborne accessories.
POWERPATH ARC RAILS
10
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