Christopher Killoy
Analyst · Lake Street Capital
Thanks, Tom. The first quarter of 2021 marks the fifth consecutive quarter of meaningful growth in sales, profitability and virtually every financial and operating metric. Capitalizing on the historic surge in consumer demand that began late in the first quarter of 2020, we strengthened our workforce and realized operational efficiencies despite the challenges posed by the COVID-19 pandemic throughout this period.
Demand. The estimated unit sell-through of the company's products from the independent distributors to retailers increased 9% in the first quarter of 2021 compared to the prior year period. For the same period, the National Instant Criminal Background Check System background checks, as adjusted by the National Shooting Sports Foundation, commonly referred to as NICS checks, increased 13%. This growth is attributable to increased consumer demand for firearms in the first quarter of 2021 and has likely been constrained due to limited available inventory in the distribution channel.
New product development. During this period of unprecedented growth, we did not allow ourselves to be distracted from our focus of new product development. Consequently, in March, we introduced the Ruger MAX-9, a versatile 9-millimeter pistol that has been met with tremendous excitement. The MAX-9 joins an impressive roster of products that were introduced in the past 8 quarters. These include the extremely popular Ruger-57 pistol, which is awarded the 2020 Caliber Award for Best Overall New Product by the Professional Outdoor Media Association, in conjunction with the NASGW. The LCP II in .22 long rifle, which is based on the venerable LCP platforms and utilizes our light rack system for easier slide manipulation and a reduced recoil. The Wrangler Revolver, our latest take on the classic single-action revolver, which shows no signs of slowing down.
In the first quarter of 2021, new product sales represented $35 million or 21% of firearm sales compared to $23 million or 20% of firearm sales in the first quarter of 2020. As a reminder, derivatives and product line extensions of mature product families are not included in our new product sales calculation. We look forward to additional exciting product launches in 2021, including the return of Marlin lever action rifles, which we plan to begin shipping in the fourth quarter.
Production and inventory. Since the first quarter of 2020, our workforce has been strengthened by 340 folks or 22%, and our quarterly unit production has increased by 180,000 units or 49%. That is really a phenomenal feat and it was truly a company-wide team effort. It involved operations, HR, marketing, facilities, supply chain, our nurses and EHS professionals, and of course, our dedicated and hard-working production folks at all of our facilities. Nevertheless, we have yet to catch up with the historic surge in demand.
At the end of the first quarter in 2021, our finished goods inventory and distributor inventories of Ruger products were 153,000 units lower than at the end of the first quarter of 2020.
COVID-19. Since its onset in March 2020, we have remained proactive in maintaining the health and safety of our employees and mitigating its impact on our business by providing all hourly employees with additional 2 weeks of paid time off in 2020 and an additional week in 2021; providing cash and other incentives for employees to become fully vaccinated; reducing hiring in early 2020 to help maintain the health and safety of our employees and the cleanliness of our facilities; encouraging employees to continue to work remotely wherever possible and maintaining social distancing throughout each manufacturing facility, including in every manufacturing cell; confidentially communicating with and assisting employees with potential health issues through our dedicated facility nurses; restricting visitor access to minimize the introduction of new people to the factory environment; implementing additional cleaning and sanitizing, improved ventilation and other health and safety processes to maintain a clean and safe workplace; providing all employees with multiple face mask coverings and other personal protective equipment and mandating their use at all times in our facilities; issuing periodic guidance and reminders to all associates directly to their phones when possible to encourage them to engage in safe and responsible behaviors; and manufacturing and donating personal protective equipment to local hospitals, health care facilities and police and fire departments in our local communities.
With more of our folks getting vaccinated and positivity rates in our local communities remaining near or below the 5% benchmark, COVID-19 was less disruptive to our day-to-day operations in the first quarter of 2021 than the prior year. However, the future impact of COVID-19 is unknown, and we remain vigilant. We are hopeful that the downward trend continues in 2021, and we are working hard to achieve that end. We estimate that COVID-related costs will total approximately $1.5 million in 2021. Included in this estimate is a $200 bonus for every employee who becomes fully vaccinated. Our financial strength, evidenced by our debt-free balance sheet, provides financial security and flexibility as we manage through challenges like COVID-19 and focus on our long-term goals and the creation of shareholder value.
Those were the highlights of the first quarter of 2021. Operator, may we have the first question, please?