TTN & Cimarron 1878 Coach Gun Performance Firing Pin Kit
Restore dependable ignition in your TTN or Cimarron 1878 Coach Gun with the SliXPin Performance Firing Pin Kit. Designed specifically for TTN-manufactured side-lock Model 1878 shotguns, this matched firing pin and spring system helps promote consistent primer contact, dependable firing pin return, and reliable operation.
Years of shooting can produce wear, erosion, or minor pitting where the hammers contact the firing pins. This wear may reduce effective firing pin travel and contribute to shallow primer strikes, intermittent failures to fire, or inconsistent ignition between barrels.
The SliXPin system uses precision-machined extended firing pins to provide increased primer reach in compatible TTN shotguns. In suitable applications, the additional reach may help compensate for normal hammer-face wear without immediately requiring more extensive hammer welding or re-facing.
Each kit also includes two tuned stainless steel firing pin springs engineered to complement the extended firing pins. Together, the matched components provide reliable firing pin return, consistent operation, and long service life for competition, recreational shooting, and shotgun restoration.
Why Upgrade to the SliXPin System?
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✔ Promotes more consistent primer strikes
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✔ Helps restore dependable ignition in worn TTN shotguns
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✔ Extended firing pins provide increased primer reach
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✔ Helps compensate for minor hammer-face wear or pitting
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✔ May reduce the need for hammer welding or re-facing in suitable applications
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✔ Includes two tuned stainless steel firing pin springs
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✔ Provides dependable firing pin return after each shot
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✔ Replaces the firing pin components for both barrels
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✔ Designed specifically for TTN and TTN-manufactured Cimarron 1878 Coach Guns
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✔ Proven through Cowboy Action competition use
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✔ Proudly made in the USA
SliXPin Compatibility
Fits
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TTN Model 1878 Coach Guns
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Cimarron 1878 Coach Guns manufactured by TTN
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Compatible 12-gauge side-lock models
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Cowboy Action competition shotguns
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High-round-count TTN shotguns requiring ignition-system evaluation
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Shotguns with minor hammer-face wear or pitting
Does Not Fit
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Stoeger Coach Guns
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Norinco JW-2000 shotguns
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CZ side-by-side shotguns
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Cimarron shotguns not manufactured by TTN
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Other side-by-side shotguns not based on the TTN Model 1878 action
Important:
The SliXPin kit is engineered specifically for TTN Model 1878 and TTN-manufactured Cimarron 1878 Coach Guns. Minor fitting may be required because of manufacturing tolerances, firearm wear, previous repairs, replacement bushings, or action modifications. Severely damaged hammer faces or other ignition-system problems may still require professional repair.
Signs Your 1878 Coach Gun May Need New Firing Pins
A worn firing pin system can produce several ignition-related symptoms. The SliXPin kit may be appropriate when a compatible TTN shotgun displays one or more of the following conditions:
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Light or shallow primer strikes
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Occasional failure to fire
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Inconsistent ignition between the left and right barrels
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Visible wear or flattening on the original firing pins
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Weak, damaged, or corroded firing pin springs
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Minor pitting or erosion where the hammers contact the firing pins
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Reliable ignition with some primers but inconsistent ignition with others
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A high-round-count competition shotgun requiring preventive maintenance
These symptoms can also result from other mechanical or ammunition-related conditions. The entire ignition system should be inspected before replacement parts are installed.
Product Specifications
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Product Type |
Matched extended firing pin and spring kit |
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Primary Application |
TTN and TTN-manufactured Cimarron Model 1878 Coach Guns |
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Gauge |
Compatible 12-gauge side-lock models |
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Firing Pin Design |
Precision-machined extended-reach firing pins |
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Spring Material |
Premium stainless steel |
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Spring Construction |
Heat stress-relieved with precision-ground flat ends |
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Kit Quantity |
Two firing pins and two firing pin springs |
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Installation |
Minor fitting may be required; professional installation recommended |
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Country of Origin |
Proudly made in the USA |
How the Coach Gun Ignition System Works
When the trigger is pulled, the hammer moves forward and contacts the rear of the firing pin. The firing pin then travels through its bushing and strikes the shotshell primer. The primer ignites the powder charge and fires the shell.
Hammer Falls → Hammer Contacts Firing Pin → Firing Pin Strikes Primer → Primer Ignites Shotshell
Wear at any point in this system can reduce the depth or consistency of the primer strike. The SliXPin kit addresses the firing pin and return-spring portion of the system by providing extended firing pin reach and matched replacement springs.
How the Extended Firing Pins Help
Years of repeated hammer impact can produce wear, erosion, or minor pitting where the hammer face contacts the firing pin. This wear can reduce effective firing pin travel and contribute to shallow primer strikes or inconsistent ignition.
SliXPin firing pins are manufactured with additional reach to help compensate for minor wear while maintaining proper firing pin movement. When correctly fitted, the extended geometry can restore more positive primer contact without immediately resorting to extensive hammer modification.
The extended design is intended to address normal or minor wear. It is not a substitute for repairing severely damaged hammer faces, loose or damaged firing pin bushings, excessive headspace, damaged internal components, or other mechanical problems.
Why Replace the Firing Pin Springs Too?
A firing pin is only one part of the ignition system. The firing pin spring controls how quickly and consistently the pin retracts after the hammer is released or after the shotgun is fired.
Old firing pin springs may become weak, corroded, damaged, or inconsistent. Installing new firing pins while leaving worn springs in place can reduce the overall benefit of the repair and may contribute to sluggish or incomplete firing pin return.
That is why each SliXPin kit includes a matched pair of tuned stainless steel firing pin springs engineered specifically to complement the extended firing pin geometry.
Premium Stainless Steel Spring System
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Premium stainless steel construction
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Excellent resistance to rust and corrosion
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Heat stress-relieved for consistent spring performance
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Precision-ground flat ends
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Reversible design simplifies installation
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Engineered to complement the extended firing pin geometry
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Positive snap-fit retention on the firing pin shoulder
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Provides dependable firing pin return after each shot
Package Contents
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Two precision-machined SliXPin extended firing pins
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Two tuned stainless steel firing pin springs
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One complete matched firing pin system for both barrels
Installation & Safety Notes
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Confirm that the shotgun is completely unloaded before beginning any work.
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Follow the firearm manufacturer’s disassembly and maintenance instructions.
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Remove the original firing pins and firing pin springs.
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Inspect the original firing pins for wear, flattening, deformation, or damage.
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Inspect the hammer faces for erosion, pitting, or previous repair work.
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Inspect the firing pin bushings and channels for damage, debris, or excessive wear.
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Install the SliXPin firing pins and matched stainless steel springs.
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Confirm that each firing pin moves freely within its channel.
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Check firing pin protrusion and fit each pin as required.
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Confirm that both firing pins retract fully when pressure is removed.
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Perform all appropriate safety and function checks before returning the shotgun to service.
Professional installation recommended: Installation should be completed by a qualified gunsmith or an experienced TTN shotgun tuner. Improper fitting can affect firing pin protrusion, primer strike depth, firing pin return, ignition reliability, and safe firearm operation.
Ideal For
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Cowboy Action Shooting
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Competition Coach Guns
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Replacing worn or damaged factory firing pins
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Replacing weak or corroded firing pin springs
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Addressing shallow or inconsistent primer strikes
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Restoring older TTN 1878 Coach Guns
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Maintaining heavily used competition shotguns
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Preventive maintenance on high-round-count shotguns
Recommended TTN & Cimarron 1878 Performance Upgrades
Complete your TTN or TTN-manufactured Cimarron 1878 Coach Gun upgrade with these precision-made replacement springs. These related components are designed to improve the feel, reliability, and long-term performance of compatible 1878 Coach Guns.
TTN 1878 Sear Spring
A performance replacement sear spring designed for compatible TTN and TTN-manufactured Cimarron 1878 Coach Guns.
View TTN Sear Spring
TTN 1878 Top Lever Spring
Reduces excessive top lever opening effort while maintaining positive lockup in compatible TTN and Cimarron 1878 Coach Guns.
View Top Lever Spring
Frequently Asked Questions
Which shotguns fit the SliXPin firing pin kit?
The kit is designed specifically for TTN Model 1878 Coach Guns and Cimarron 1878 Coach Guns manufactured by TTN.
Will this kit fit a Stoeger Coach Gun?
No. The SliXPin kit is not designed for Stoeger Coach Guns, Norinco JW-2000 shotguns, CZ side-by-side shotguns, or other non-TTN models.
What is included in the kit?
Each kit contains two extended firing pins and two tuned stainless steel firing pin springs, providing one complete matched system for both barrels.
Will these firing pins fix light primer strikes?
The extended pins are designed to help restore reliable primer contact in compatible TTN shotguns experiencing minor firing pin or hammer-face wear. Light primer strikes can also be caused by worn hammers, damaged bushings, excessive headspace, ammunition, or other mechanical problems that should be inspected.
How do extended firing pins improve ignition?
The extended design provides additional firing pin reach, which can help compensate for minor wear or pitting where the hammer contacts the firing pin and promote more positive primer contact.
Why are new firing pin springs included?
The firing pin springs control firing pin return. Replacing worn springs along with the firing pins provides a complete matched system and helps promote consistent movement and retraction after each shot.
Can I reuse my original firing pin springs?
Reusing the original springs is not recommended when they are worn, weak, damaged, or corroded. The SliXPin kit includes two tuned stainless steel springs designed to work with the extended firing pins.
Will the SliXPin kit repair severely damaged hammer faces?
No. The kit may help compensate for minor wear, but severely damaged, deeply pitted, or improperly repaired hammer faces may still require welding, re-facing, replacement, or other professional gunsmithing work.
Is fitting required?
Minor fitting may be required because of manufacturing tolerances, firearm wear, previous repairs, replacement bushings, or action modifications. Correct firing pin protrusion and dependable return must be confirmed during installation.
Can I install the kit myself?
Professional installation by a qualified gunsmith or experienced TTN shotgun tuner is recommended. Improper fitting can affect ignition reliability and safe firearm operation.
Are both barrels covered by one kit?
Yes. Each kit includes two firing pins and two firing pin springs, providing replacement components for both barrels.
Are the firing pin springs reversible?
Yes. The tuned stainless steel springs feature precision-ground flat ends and a reversible design that simplifies installation.
Is the SliXPin kit made in the USA?
Yes. Every SliXPin Performance Firing Pin Kit is precision manufactured in the United States.
Whether you are maintaining a heavily used Cowboy Action shotgun, restoring an older TTN 1878, or addressing inconsistent primer strikes, the SliXPin Performance Firing Pin Kit provides a complete matched firing pin and spring system engineered for dependable ignition, smooth firing pin operation, and long service life.
Precision manufactured in the USA and proven through Cowboy Action competition use, the SliXPin system is a practical reliability upgrade for shooters who expect their TTN or Cimarron 1878 Coach Gun to perform consistently when it matters.
Proudly Made in the USA
Every SliXPin Performance Firing Pin Kit is precision manufactured in the United States using premium materials and strict quality standards for dependable ignition, consistent operation, and long service life.
