Americas Medium and Large Caliber Ammunition Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)

Americas Medium and Large Caliber Ammunition Market Trends and Insights

Rising Defense Budgets Across the Americas

Defense budgets across the Americas reached USD 912 billion in 2025, with a significant focus on ammunition allocations. The US increased its ammunition budget to USD 2.1 billion, emphasizing multi-year contracts to support industry investments in tooling and production stability. Canada allocated CAD 553 million (USD 398.18 million), enabling bulk purchases of 155mm and 50mm rounds for Arctic operations.^{[1]Government of Canada, “Strong, Secure, Engaged,” canada.ca} Brazil’s BRL 137 billion (USD 25.58 billion) defense budget included funding for insensitive-munition conversions, providing IMBEL with a stable multi-year revenue stream. Mexico allocated MXN 178 billion (approximately USD 9.90 billion) to bolster National Guard inventories, demonstrating the influence of homeland-security agencies on the medium- and large-caliber ammunition market, particularly when conventional military budgets face constraints. Chile maintained its overall defense budget but redirected 18% of procurement funds to consumables, with a particular focus on ammunition as a critical component for operational readiness.

Modernization of Armored and Artillery Platforms

Modernization programs for armored and artillery platforms are driving diversification in demand for calibers. The US Army’s M109A7 Paladin now uses insensitive 155mm rounds requiring thicker-walled cases, while Canada’s LAV III upgrade to the XM913 50mm cannon has established a new caliber standard. Brazil’s Guarani APC and Mexico’s DN-XI IFV adopted 40mm and 30mm weapons, respectively, shifting away from the previously dominant 25mm calibers. The US Marine Corps’ ACV-30 employs MK 310 programmable ammunition, which doubles the annual consumption per vehicle. The US Army’s ERCA gun extends the 155mm range to 70 kilometers, necessitating stricter controls on steel grain structure. These modernization efforts are expected to continuously refresh SKU lists in the Americas medium and large caliber ammunition market through 2031, with retrofits impacting the entire supply chain.

Geopolitical Tensions and Border-Security Operations

Geopolitical tensions and border-security operations have intensified, leading to increased ammunition demand. Along the Rio Grande, US Customs and Border Protection (CBP) reported a 19% rise in incidents requiring small-unit direct fire, prompting a USD 47 million increase in its FY 2026 ammunition request. Mexico’s National Guard consumed training stocks three times faster than usual, forcing SEDENA to expedite procurement processes by utilizing military reserves. Colombia experienced a 34% increase in 105mm and 155mm shell usage during operations near Cúcuta, while Chile’s 25mm ammunition consumption rose by 27% in anti-smuggling patrols. These surges have shortened lead times in the Americas medium and large caliber ammunition market, requiring manufacturers to operate additional shifts to meet urgent replenishment demands.

Replacement of Aging Ammunition Stockpiles

The replacement of aging ammunition stockpiles is becoming a priority due to rising demilitarization costs. The US Army identified 22% of its 155mm inventory as exceeding the 30-year safety limit, incurring disposal costs before new rounds can be procured. Canada reported 14,000 tons of obsolete Cold War-era ammunition, while Brazil disclosed that 38% of its 105mm stocks failed insensitive-munition standards. Mexico revealed that 60% of its 120mm tank ammunition dates back to pre-1995 production, posing safety and performance risks. Chile’s transition to Rheinmetall DM121 shells reflects a broader trend across the continent: replacement spending is focused on structural turnover rather than consumption growth, ensuring baseline demand in the Americas medium and large caliber ammunition market through the decade.

Stringent Export Control and ITAR Compliance Costs

Export controls and ITAR compliance are imposing high costs on ammunition exports. ITAR filings add USD 1,200–1,800 per line item, extend approval timelines, and increase shipment costs by 12–15%. The average wait time of 127 days deters smaller US suppliers from pursuing quick-turn orders.^{[2]Government Accountability Office, “Defense Export Controls,” gao.gov} Mexico incurred USD 2.3 million in compliance costs for a USD 21 million grenade purchase, leading to a preference for non-ITAR suppliers from South Korea and Israel. Brazil’s IMBEL faced a nine-month delay in ramping up 155mm production due to US propellant ingredient waivers. At the same time, Colombia canceled a US joint venture over projected compliance costs of USD 4.8 million. These regulatory challenges benefit European and South American manufacturers, reducing the market share available to US exporters in the Americas medium and large caliber ammunition market.

Volatility in Raw-Material Prices (Copper, Steel, Propellants)

Fluctuations in raw material prices are impacting ammunition production costs. Copper prices remained at USD 4.20 per pound in December 2025, an 18% increase from 2024, while steel coil prices rose by 14%. A fire at the Radford plant disrupted US nitrocellulose production, forcing General Dynamics and Northrop to import from Europe at a 19% premium. CBC Global reported a 3.2-point margin reduction, and IMBEL faced a 21% increase in steel-billet costs as Vale prioritized exports. Larger manufacturers are mitigating risks through five-year take-or-pay contracts. Still, smaller South American firms lack the financial leverage to hedge their risks effectively, thereby increasing their vulnerability to consolidation. This raw-material volatility limits profit margins and discourages capacity expansions dependent on stable input costs, constraining growth in the Americas medium and large caliber ammunition market.

*Our forecasts treat driver/restraint impacts as directional, not additive. The impact forecasts reflect baseline growth, mix effects, and variable interactions.

Segment Analysis

By Caliber: Medium Strength Prevails, Large Accelerates

Medium rounds led the Americas medium and large caliber ammunition market in 2025, accounting for a 63.89% share. This dominance is attributed to the widespread use of 20–40mm guns on infantry vehicles, close-in weapon systems (CIWS), and attack helicopters. However, demand for large-caliber ammunition is expected to grow at a CAGR of 5.21%, driven by programs such as the ERCA initiative and Brazil’s ASTROS rocket-artillery expansion, both of which emphasize 155mm shells. The market size for large-caliber projectiles is projected to increase from approximately USD 1 billion in 2026 to USD 1.3 billion by 2031. Notable contracts, such as General Dynamics’ USD 465 million agreement in July 2025 for 120mm M1002 training rounds, highlight sustained demand from the Abrams fleet, while Northrop’s Bushmaster contract supports medium-caliber production through 2028.

The market faces a strategic balance between volume and lethality. Medium calibers are cost-effective and support rapid-fire tactics essential for border patrol, naval interdiction, and urban defense. In contrast, large calibers offer higher payloads, extended range, and superior performance in peer warfare scenarios. Innovations like Textron’s XM204 120mm top-attack round, priced at USD 12,000 and capable of defeating active-protection systems, blur the distinction between shells and missiles. However, logistical challenges persist, as seen in Canada’s adoption of a 50mm cannon for its LAV III, which necessitated funding a standalone ammunition line due to limited allied stockpiles. These divergences complicate efforts to standardize SKUs, increasing inventory costs for coalition planners.

By Product: Artillery Dominance, Aerial Momentum

Artillery shells and mortars accounted for 53.41% of revenue in 2025, solidifying their position as the cornerstone of the Americas medium and large caliber ammunition market. US monthly production targets of 70,000 155mm shells could generate approximately USD 1.7 billion in annual revenue by 2031, assuming unit prices for unguided variants remain near USD 1,050. Aerial bombs and grenades are expected to grow at a CAGR of 6.34%, supported by the AH-1Z Viper and A-10 fleets, which utilize programmable fuzes that increase average selling prices without significantly raising material costs. The USD 819 million Amtec training-grenade contract demonstrated the potential for economies of scale in this previously fragmented sub-sector, creating a strategic revenue stream for suppliers adept at producing low-cost composite casings.

Mortar ammunition, once considered a niche product, has seen renewed interest as light-infantry units shift from relying on heavy artillery to adopting mobile firepower. For instance, Orbital ATK’s M821A3 insensitive 81mm round completed fielding with the Marine Corps in June 2025, establishing a baseline reorder rate that mitigates potential declines in 120mm tank ammunition consumption. Brazil’s ASTROS system, which integrates 127mm rockets and tube artillery, has attracted new electronics suppliers to the value chain, as these hybrid systems require GPS, data links, and fuse setters traditionally absent from conventional shell production.

By Guidance: Unguided Mass, Guided Upswing

Unguided ammunition accounted for 79.73% of shipments in 2025 and is projected to maintain nearly two-thirds of the market share by 2031. This dominance reflects the cost-effectiveness and simplicity of unguided rounds, which remain a staple for many military operations. However, guided ammunition is expected to grow at a CAGR of 8.43%, capturing over one-quarter of the total market value by the end of the forecast horizon. Growth in the guided segment is supported by products like XM1113 RAP shells and Elbit’s SIGMA family, which aim for ranges of up to 70 kilometers. 

Despite advancements, challenges remain, such as GPS jamming at the US National Training Center, which reduced Excalibur hit rates to 68% and prompted the Army to procure SPIKE NLOS man-portable missiles as a contingency. Cost remains a barrier, with precision 155mm rounds priced at seven times the cost of unguided variants. In South America, armies continue to rely on unguided ammunition until local licensing of seeker assemblies by US or Korean suppliers reduces costs below USD 3,000, enabling broader adoption. The gradual shift toward guided ammunition reflects a broader trend of increasing precision and technological integration in modern warfare, although cost and logistical challenges remain significant hurdles to overcome.

By End-User: Military Core, Law-Enforcement Lift

Military forces accounted for 89.84% of the market revenue in 2025; however, law enforcement is emerging as a growing segment with a CAGR of 5.67%. Notable examples include the US Customs and Border Protection’s USD 47 million ammunition order and Brazil’s Federal Police procurement of 800,000 12.7mm rounds. These developments highlight the increasing role of internal security forces in driving demand for specialized ammunition. 

Urban operations favor medium calibers with low-fragmentation profiles, creating opportunities for product specialization. This shift enables smaller firms producing non-lethal 40mm grenades to scale up production, a market previously dominated by military contracts. The growing involvement of law enforcement agencies in the ammunition market highlights the expanding scope of applications for medium and large-caliber ammunition, thereby further diversifying the customer base and driving innovation in product design and manufacturing processes.

By Platform: Land Weight, Naval Upside

Land systems accounted for 68.75% of the market share in 2025, providing a stable baseline for tonnage through 2031. These systems remain critical for ground-based operations, providing a consistent demand for medium- and large-caliber ammunition. However, the naval segment is expected to grow at a CAGR of 5.84%, driven by the introduction of new frigates and destroyer upgrades equipped with Mk 45 Mod 4 guns, each consuming approximately 1,200 rounds annually. 

Airborne demand, however, faces challenges. The retirement of the A-10 fleet will eliminate the need for approximately 1.8 million annual 30mm training rounds. While AH-64E and AC-130 fleets will partially offset this decline, overall airborne ammunition consumption may decrease by 18% by 2031 unless unmanned gunships enter production. The evolving dynamics across land, naval, and airborne platforms highlight the diverse and shifting demands within the Americas medium and large caliber ammunition market, emphasizing the need for adaptability and innovation among suppliers.

Geography Analysis

North America continues to lead the Americas medium and large caliber ammunition market, although its internal market dynamics are evolving. The US, with a 66.54% market share in 2025, is prioritizing rebuilding its strategic reserves through fixed-price contracts to mitigate supplier capital expenditure risks. In Canada, a one-time CAD 553 million (USD 398.18 million) replenishment is expected to drive a spike in volumes during 2025-2026. Still, orders are projected to decline once backfilling for Ukraine is completed. Meanwhile, Mexico, with a 6.15% CAGR, is emerging as the region's growth driver, supported by National Guard deployments and the DN-XI program, which consumes 180,000 30mm rounds annually. This varied pace of growth across the region necessitates differentiated pricing strategies: long-term US contracts favor discount structures, Canadian spot purchases require surge capacity, and Mexican agreements depend on regulatory flexibility.

South America accounted for 26.18% of the market's revenue and is actively reshaping trade flows. Brazil's IMBEL facility is adding 120,000 155mm shells to the regional supply, reducing reliance on US exports, which are constrained by ITAR regulations.^{[3] Janes, “Brazil Defense Budget 2025,” janes.com} Chile has increased ammunition spending to 18% of its procurement budget, while Colombia turned to Poongsan Corporation for emergency shell supplies when inventories fell below training requirements. 

Despite budgetary challenges, Argentina allocated 22% of its procurement budget to 105mm ammunition, recognizing the critical role of consumables in maintaining readiness. Peru's riverine programs have tripled the use of 20mm rounds, exposing inventory shortages that regional manufacturers, such as FAMAE and Indumil, aim to address through brokerage. Local production capacity is growing at an annual rate of 12-15%, offering a viable alternative for neighboring countries and reducing delivery times from 12 months to under six months. 

Brazil's export initiatives, supported by agreements to supply Paraguay, Uruguay, and Ecuador, indicate that South-South trade channels could reduce US export dominance by up to 22% by 2030. Technology transfer agreements are enabling Chile and Colombia to license-produce specialized ammunition, providing a safeguard against supply disruptions. For manufacturers, this shift places downward pressure on margins unless offset by innovations such as insensitive munitions or embedded proximity fuzes. The evolving market landscape marks a change from a US-centric export model to a decentralized ecosystem, where flexibility in capacity and compliance is increasingly prioritized over sheer scale.

Regulatory Landscape

In the United States, medium and large caliber ammunition programs operate within a tightly controlled acquisition and compliance structure that spans the Army SMCA framework, DoD contracting rules, and firearms and ammunition import controls. In February 2026, the US Army activated the Capability Program Executive for Ammunition and Energetics (CPE A&E) at Picatinny Arsenal to replace the former JPEO A&A construct, reinforcing faster capability delivery and industrial-base modernization priorities that shape how new ammunition requirements are competed, qualified, and fielded.

Cross-border sourcing across the Americas is also shaped by trade and compliance requirements. In May 2026, ATF published a final confirmatory rule amending 27 CFR Part 447 to align import regulations with Export Control Reform constructs, noting Department of Commerce jurisdiction alongside Department of State pathways for items on the US Munitions Import List (USMIL). At the same time, ITAR-related timelines and documentation burdens remain a practical constraint for US-to-Latin America transactions, affecting bidder participation and the attractiveness of non-ITAR supply options for certain buyers.

Value Chain Analysis

The value chain starts with metals and energetics inputs (steel, copper, propellants and explosive ingredients), then moves through forging and machining of shell bodies, cartridge cases, and fuzes. It follows with energetic filling, final assembly, qualification testing, and government acceptance before distribution to military depots and end users. Recent evidence also points to shell-body metal parts capacity as a binding constraint in North America: a DoD Inspector General assessment described the contractor-operated Mesquite, Texas, facility as a bottleneck after producing zero usable 155mm metal parts since opening in 2024, despite broader efforts to raise monthly 155mm output.

Manufacturers and governments are responding with new facilities and partnership models across tiers. The US Army opened a new 155mm M795 assembly facility in Parsons, Kansas, with a planned capacity of 12,000 projectiles per month, while Canada announced funding for IMT Precision to establish a 155mm shell manufacturing facility in Ingersoll, Ontario. Non-traditional collaborations are also expanding, including a Lockheed Martin and General Motors memorandum to apply commercial manufacturing methods to defense supply chain scaling, and a strategic alliance between CBC Global Ammunition and Paligen Technologies aimed at US government medium-caliber programs, reflecting a push to strengthen domestic capability and shorten lead times.

Market Opportunities and Future Outlook

A key whitespace sits in qualified large-caliber metal parts manufacturing and the upstream energetics base, where output constraints translate into longer lead times and greater urgency for alternative sources inside the Americas. The production gap is visible in US 155mm output reaching 36,000 rounds per month as of March 2026 against earlier capacity goals, alongside a DoD Inspector General review that flagged shell-body production shortfalls at the Mesquite, Texas, plant. This environment creates near-term opportunities for suppliers that can deliver qualified shell bodies, forgings, and machining throughput, as well as for firms that can provide traceability, process control, and acceptance-test support aligned to US Army SMCA procurement pathways.

Capital and program actions also provide concrete demand signals for new capacity and technology insertion. In July 2026, CSG broke ground on a government-owned, contractor-operated Future Artillery Complex in Iowa designed to produce 36,000 loaded 155mm projectiles per month, and in June 2026 National Presto Industries announced a USD 90 million investment for a new medium-caliber ammunition production and test facility in Clear Lake, South Dakota. In parallel, Pentagon framework agreements with companies including BAE Systems, Lockheed Martin, and Honeywell (March 2026) highlight continued emphasis on securing critical munitions components and sub-systems, supporting opportunities for electronics, fuzing, and production digitization as guided and proximity-fuzed rounds take a larger value share even while unguided volumes remain dominant for training and suppression fire.