American Built Arms Company Pro 5.56mm Firing Pin Review

How the American Built Arms Company Pro 5.56mm Firing Pin Surprised Me

My AR-15 platform is a meticulously assembled entity, a culmination of countless hours spent researching, sourcing, and fitting components. Lately, however, a nagging suspicion about the firing pin within my go-to 5.56 build prompted a search for a reliable replacement. The American Built Arms Company Pro 5.56mm Firing Pin, a seemingly simple component, caught my eye due to its robust material specification and straightforward design. The need for a consistently reliable ignition source, especially after a few inconsistent primer strikes that sent me scrambling during a recent range day, made this a crucial purchase. First impressions were positive; the pin felt solid, with a clean chrome plating that suggested good protection against wear and corrosion. While I briefly considered generic, unbranded pins from online marketplaces, the thought of potential compatibility issues and unknown metallurgy quickly steered me back towards reputable manufacturers like American Built Arms Company. A quiet sense of anticipation settled in, hoping this small part would resolve my ignition woes.

Real-World Testing: Putting American Built Arms Company Pro 5.56mm Firing Pin to the Test

First Use Experience

My initial testing took place at my local indoor range, a controlled environment where I could meticulously observe the firearm’s function. I swapped out the suspected faulty pin for the new American Built Arms Company Pro 5.56mm Firing Pin in my Daniel Defense bolt carrier group, paired with an LMT carrier. This setup is typically very reliable, so any hiccups would be immediately apparent. The change was immediately noticeable; the pin seated correctly with appropriate bolt face protrusion, a critical measurement for proper ignition. Over a hundred rounds, I experienced zero light strikes or misfires. The operation felt crisp and consistent across various ammunition types, from standard 55gr FMJ to some lighter frangible loads.

Extended Use & Reliability

Following that initial positive outing, the American Built Arms Company Pro 5.56mm Firing Pin has seen an additional several hundred rounds. It’s been integrated into both a lightweight build with a Faxon barrel and a more standard AR-15 configuration. In both instances, it performed flawlessly, contributing to smooth cycling and consistent ignition. The chrome plating shows no signs of premature wear, even after being handled and installed multiple times. Cleaning is straightforward; a quick wipe-down with a solvent-soaked patch is all that’s needed to keep it free of carbon buildup, and it dries quickly. Compared to some budget pins I’ve encountered in the past, which sometimes developed burrs or inconsistent tip geometry, this pin feels far more durable and precision-made.

Breaking Down the Features of American Built Arms Company Pro 5.56mm Firing Pin

Specifications

The American Built Arms Company Pro 5.56mm Firing Pin is constructed from AISI 8740 steel, a high-strength alloy known for its excellent durability and resistance to fatigue. This material is then finished with a chrome plating, which not only enhances its visual appeal with a silver luster but also provides superior corrosion resistance and a smoother surface finish. It’s designed to be Mil-Spec for the AR-15 platform, ensuring broad compatibility with standard bolt carrier groups. The manufacturer is American Built Arms Company. This robust construction is crucial for a component that experiences immense forces with every trigger pull.

Performance & Functionality

This firing pin does its primary job exceptionally well: reliably igniting primers. The correct bolt face protrusion is vital, and this pin achieved it perfectly on my Daniel Defense bolt. This ensures that the firing pin strikes the primer with the appropriate force and depth, leading to consistent ignition across a wide range of ammunition. Its performance has been consistently high, delivering crisp primer strikes even during rapid fire sequences. While it’s a simple component, its flawless execution in this regard is its greatest strength, exceeding the performance of some less expensive or less precisely manufactured alternatives.

Design & Ergonomics

The design of this firing pin is inherently simple, as is typical for AR-15 components. However, the chrome plating provides a smooth surface that resists carbon fouling and ensures it glides unimpeded within the bolt. The manufacturing precision means there are no rough edges or imperfections that could potentially impede its travel or cause issues. Its silver finish is aesthetically pleasing and suggests a quality finish applied uniformly. While ergonomics aren’t a primary concern for a part that resides deep within the bolt, the quality of its construction and finish contributes to an overall sense of reliability and professional craftsmanship.

Durability & Maintenance

Given its construction from AISI 8740 steel and the protective chrome plating, the American Built Arms Company Pro 5.56mm Firing Pin is built for longevity. Under normal use within a clean and properly lubricated AR-15 bolt carrier group, it should last for tens of thousands of rounds. Maintenance is minimal; periodic cleaning to remove carbon residue from the tip and body is sufficient. There are no obvious wear points that would suggest premature failure. The material choice and plating are indicative of a component designed to withstand the rigors of repeated firing without significant degradation.

Accessories and Customization Options

This product is a singular replacement part and does not typically come with accessories. Its primary function is to be a direct replacement for a standard AR-15 Mil-Spec firing pin. Therefore, there are no specific customization options available for the pin itself. Compatibility is its key feature, designed to work seamlessly within existing AR-15 bolt carrier groups. If your existing firing pin is worn or damaged, this unit offers a direct, drop-in solution without the need for special tools beyond standard bolt disassembly procedures.

Pros and Cons of American Built Arms Company Pro 5.56mm Firing Pin

Who Should Buy American Built Arms Company Pro 5.56mm Firing Pin?

This firing pin is an excellent choice for AR-15 owners who prioritize reliability and quality in their firearm components. It’s ideal for sport shooters, competitive shooters, and anyone who maintains their rifle for self-defense or duty use. If you’ve experienced inconsistent primer strikes, light strikes, or suspect your current firing pin is worn, this American Built Arms Company Pro 5.56mm Firing Pin is a superb upgrade or replacement. Those building new AR-15s who want to start with quality Mil-Spec components will also find it a solid choice.

Those who should potentially look elsewhere might be individuals seeking esoteric, custom-material pins for highly specialized applications, though this is a niche within a niche. For the vast majority of AR-15 owners looking for a dependable, durable, and correctly functioning firing pin without breaking the bank, this model is an outstanding option. It’s also worth noting that having a spare is always a good idea for any critical component, so considering a second unit as a backup is a practical step for any serious firearm enthusiast.

Conclusion on American Built Arms Company Pro 5.56mm Firing Pin

The American Built Arms Company Pro 5.56mm Firing Pin delivers precisely what it promises: reliable ignition from a durable, well-made component. Its construction from AISI 8740 steel with a protective chrome plating ensures it can withstand the rigors of consistent use. The Mil-Spec design means it integrates seamlessly into most AR-15 platforms, and the consistent primer strikes I experienced confirm its high level of functionality. For its modest price of $10.99, the quality and performance are exceptional, offering significant value for money. I would readily recommend this firing pin to any AR-15 owner looking for a dependable replacement or upgrade. It’s a small part that plays a critical role, and this model performs that role admirably.