A SAFER, MORE RELIABLE GUN STRING

All Guns Delivered to Wellsite Loaded & Armed By YJOT 
All Assemblies 100% Built & Tested In Factory Setting 
All Assemblies Delivered with Thread/Seal Bore Protection 
Zero Components To Redress On Location
Most Environmentally Responsible Gun String Available
Minimizes Wellsite Labor Costs By Reducing Number Of Connections

A SAFER, MORE RELIABLE GUN STRING

All Guns Delivered to Wellsite Loaded & Armed By YJOT
All Assemblies 100% Built & Tested In Factory Setting
All Assemblies Delivered with Thread/Seal Bore Protection
Zero Components To Redress On Location
Most Environmentally Responsible Gun String Available
Minimizes Wellsite Labor Costs By Reducing Number Of Connections

MEET FIRST STRING™ WITH PULL & PLAY™ TECHNOLOGY

THE FIRST 100% MODULAR GUN STRING

FEMALE TOP SUB

• Factory Redressed

• 1 5/8″ Go Style Thread Screws Into CCL Or BRT

• O-Rings & Thread Protectors Installed

• Plunger Contact Assembly Installed

• Female Bottom Thread Screws Onto The Top Gun Tandem Sub

GUN ASSEMBLY

• Sub Pre-Installed On The Gun Body

Poka-Yoke Enhanced, Factory-Built Assembly Techniques

Delivers Fully Loaded and Armed with Pull & Play™ Technology Direct To The Wellsite

Factory Assembled In Houston

• Available Gun System options – HALO™, Pull & Play™, Pre-Loaded Complete

PLUG SHOOT ASSEMBLY

Plug Shoot Factory Assembled With Tandem Sub

Factory Redressed & Armed With Ignitor

Delivers with O-Rings & Thread Protectors Installed

One-time Use Confirmed Set Module Assembled Using The Switch Of Your Choice

M1+ PLUG-SET COMBO

Patent-Pending Adapterless Setting Tool Connected to an M1™ Plug – Only Plug-Set Combo On The Market That Does Not Require An Adapter Kit.

No Unsafe Disassembly & Installation Of Adapter Kit On Location

Delivers With Dual-Sided Power Cartridge & Thread Protectors Installed

Dual-Sided Power Cartridge Eliminates Mis-Runs Due To Power Cartridge Being Loaded Backward (coming soon)

WHY FIRST STRING™?

All Assemblies 100% Built & Tested In Factory Setting

• Design-Reinforced Poka-Yokes For Manufacturing & Assembly

• Fully Loaded and Armed, Delivered To The Wellsite Ready To Assemble

All Assemblies Delivered with Thread/Seal Bore Protection 

• Zero Components To Redress On Location

• Built With Switch & Charge Of Your Choice

• One-Way Orientation For Top Sub, Gun, Plug Shoot, and M1+ Combo

• Most Environmentally Responsible Gun On The Market

MEET FIRST STRING™ WITH PULL & PLAY™ TECHNOLOGY

THE FIRST 100% MODULAR GUN STRING

WHY FIRST STRING™?

All Assemblies 100% Built & Tested In Factory Setting

• Design-reinforced Poka-Yokes For Manufacturing & Assembly

• Fully Loaded and Armed, Delivered To The Wellsite Ready To Assemble

All Assemblies Delivered with Thread/Seal Bore Protection

• Zero Components To Redress On Location

• Built With Switch & Charge Of Your Choice

• One-Way Orientation For Top Sub, Gun, Plug Shoot, and M1+ Combo

• Most Environmentally Responsible Gun On The Market

FEMALE TOP SUB

• Factory Redressed

• 1 5/8″ Go Style Thread Screws Into CCL Or BRT

• O-Rings & Thread Protectors Installed

• Plunger Contact Assembly Installed

• Female Bottom Thread Screws Onto The Top Gun Tandem Sub

GUN ASSEMBLY

• Sub Pre-Installed On The Gun Body

Poka-Yoke Enhanced, Factory-Built Assembly Techniques

Delivers Fully Loaded and Armed with Pull & Play™ Technology Direct To The Wellsite

Factory Assembled In Houston

PLUG SHOOT ASSEMBLY

Plug Shoot Firing Head Factory Assembled With Tandem Sub

Factory Redressed And Armed With Ignitor

Delivers with O-Rings & Thread Protectors Installed

One-time Use Confirmed Set Module Assembled Using The Switch Of Your Choice

M1+ PLUG-SET COMBO

Patent-Pending Adapterless Setting Tool Connected to an M1™ Plug – Only Plug-Set Combo On The Market That Does Not Require An Adapter Kit.

No Unsafe Disassembly & Installation Of An Adapter Kit On Location

Delivers With Dual-Sided Power Cartridge & Thread Protectors Installed

Dual-Sided Power Cartridge Eliminates Mis-Runs Due To Power Cartridge Being Loaded Backward (coming soon)

Full line of
m1™ Plugs

Yellow Jacket
Guns

SETTING
TOOLS

Other COMPLETION
PRODUCTS

Other Perforating
components

Full line of
m1™ Plugs

Yellow Jacket
Guns

SETTING
TOOLS

Other COMPLETION
PRODUCTS

Other Perforating
components

Our products are designed not just
for reliability, but affordability…

Our gun system is not
one size fits all…

Your delivery timeline is
our delivery timeline…

Efficiency and optimization, an elegant
solution to a complex problem.

Our products are designed not just
for reliability, but affordability…

Our gun system is not
one size fits all…

Your delivery timeline is
our delivery timeline…

Efficiency and optimization, an elegant
solution to a complex problem.

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© 2022 G&H Diversified Manufacturing, L.P.   All rights reserved.  All information and product design and availability is subject to change or correction at any time.  Terms, conditions, representations and warranties shall be in accordance with G&H standard agreement or specific purchase order, etc.  Access information and digital cookies, crumbs, pixels and similar technology is used for improved site access and marketing purposes.  Only lawful access and use of this site is permitted.

Trademark Notice.  G&H, the G&H logo, Yellow Jacket, the Yellow Jacket Logo, the Flame-Winged Hornet image, M1, HALO, First String, Pull & Play, DSS, POP-N-LOK, along with taglines and slogans as presented in this medium of expression are the exclusive trademarks, service marks, logos and intellectual property of G&H Diversified Manufacturing, LP.  All rights reserved.

© 2022 G&H Diversified Manufacturing, L.P.   All rights reserved.  All information and product design and availability is subject to change or correction at any time.  Terms, conditions, representations and warranties shall be in accordance with G&H standard agreement or specific purchase order, etc.  Access information and digital cookies, crumbs, pixels and similar technology is used for improved site access and marketing purposes.  Only lawful access and use of this site is permitted.