The Firing Pin Assembly – 43 (Part #100700154) is a complete striker assembly designed for shooters who want to restore or maintain the reliability of their Glock 43-style pistol. This drop-in firing pin assembly replaces worn or damaged components in your compact 9mm carry gun, helping ensure consistent primer ignition, reliable cycling, and dependable performance in both training and defensive use.
If your Glock 43 is experiencing light primer strikes, intermittent failures to fire, or you’re simply performing routine preventive maintenance, this 43 firing pin assembly 100700154 is the critical small part you don’t want to overlook.
Designed for Glock 43-Pattern 9mm Pistols
This firing pin assembly is purpose-built for Glock 43 compact 9mm platforms (and many Glock 43-style clones and slides that follow OEM geometry).
Key benefits of using a model-specific firing pin assembly include:
Proper fit inside G43-spec slides and channels
Correct striker protrusion for reliable primer ignition
Correct spring weight for balanced slide velocity and lockup
Always verify compatibility with your slide and frame, but if you’re running a Glock 43-pattern setup, this firing pin assembly is built with that compact single-stack design in mind.
Restore Reliable Ignition & Performance
The firing pin (striker) is the heart of your pistol’s ignition system. Over time, striker tips, springs, and cups can wear, chip, or weaken, leading to:
Light primer strikes
Inconsistent ignition across different ammo brands
Occasional failures to fire, especially with harder primers
Dropping in a fresh Firing Pin Assembly – 43 100700154 helps:
Restore consistent, authoritative strikes on primers
Reduce the likelihood of misfires due to worn striker components
Improve confidence in your carry or defensive handgun
For anyone who depends on their Glock 43 for everyday carry, replacing a tired striker assembly is smart, inexpensive insurance.
Complete Firing Pin Assembly – Ready to Install
Rather than piecing together small parts one by one, this unit is a complete firing pin assembly (also commonly referred to as a striker assembly), typically including:
Because it’s pre-assembled, installation is straightforward:
Field strip the slide and remove the backplate.
Remove the old striker assembly and channel liner debris if necessary.
Insert the new 43 firing pin assembly.
Reinstall the backplate and function check.
If you’re comfortable detail-stripping the slide on a Glock 43, you’ll find this upgrade quick and simple.
Durable Materials for High-Round-Count Use
A firing pin assembly must withstand repeated impacts and rapid cycling. This 43 firing pin assembly is made from quality materials chosen for:
Impact resistance at the striker tip
Spring durability under repeated compression and decompression
Smooth operation in the striker channel when properly cleaned and lubricated
When paired with a clean firing pin channel and quality ammunition, this helps keep your compact 9mm pistol running reliably across thousands of rounds.
Ideal for Maintenance, Repairs & Spare Parts Kits
Because the firing pin assembly is a critical wear part, it’s a smart component to keep on hand:
Use as a direct replacement when your current striker shows signs of wear or damage.
Keep as a backup in your range bag or armorer’s kit for quick repairs.
Refresh older or heavily used pistols as part of scheduled preventive maintenance.
For shooters who train regularly, attend classes, or run their Glock 43 hard, a spare firing pin assembly is an essential piece of gear.
Perfect for Carry, Defense, and Training Pistols
It doesn’t matter if your Glock 43 is:
A daily concealed carry gun
A backup/secondary defensive pistol
A high-mileage training or range gun
In all cases, reliable ignition is non-negotiable. The Firing Pin Assembly – 43 100700154 helps ensure your striker system isn’t the weak link at the moment you need your pistol the most.
When Should You Replace Your Firing Pin Assembly?
While exact intervals vary based on use and conditions, consider replacing your striker assembly if:
You see persistent light strikes that aren’t ammo-related.
The striker tip appears chipped, deformed, or excessively worn.
The firing pin spring feels weak, gritty, or inconsistent during cycling.
The pistol has very high round count and is used for serious defensive purposes.
Many shooters also like to install a new firing pin assembly when buying a used pistol, simply to start fresh with known, healthy internal parts.
Key Features – Firing Pin Assembly – 43 100700154
Part Number: 100700154
Product Type: Firing Pin / Striker Assembly
Compatibility: Glock 43-pattern compact 9mm slides (verify with your manufacturer)
Function: Strikes primer to ignite cartridge; critical to reliable firing
Configuration: Complete assembly (striker body + spring + associated hardware)
Use Cases: Repair, replacement, preventive maintenance, spare part
(Always follow proper firearm safety procedures and, if unsure, have installation performed or inspected by a qualified gunsmith or armorer.)
Why Choose the Firing Pin Assembly – 43 100700154?
Choose this firing pin assembly if you:
Depend on a Glock 43-style pistol for carry or defense and want maximum reliability
Are experiencing light strikes or intermittent failures to fire
Are refreshing or rebuilding a used or high-round-count slide
Want a ready-to-install striker assembly instead of sourcing individual parts
For a compact 9mm that you trust with your safety, keeping the ignition system in top condition is essential. The FIRING PIN ASSEMBLY – 43 100700154 is a practical, high-impact upgrade that helps keep your pistol firing every time you press the trigger.
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