U.S. Sells M109A7 Howitzers to Taiwan: PLA's Long-Range Firepower System Has Achieved a Three-Generation Leap

On February 9, the U.S. Defense Security Cooperation Agency approved the sale of 22 M109A7 "Paladin" self-propelled howitzers to Taiwan, with a total value of approximately $450 million. This figure may seem unremarkable at first glance—averaging over $20 million per howitzer, which is more expensive than an F-16V fighter jet. This exposes an easily overlooked fact: the Taiwanese military's ground firepower system has fallen behind to the point of needing "catch-up."

M109A7: A "New Bottle for Old Wine" Equipment

The M109 series is a product of the Cold War era, first entering service in 1963. Although the A7 model only began mass production in 2015, it is essentially a continuous patchwork on a 1960s chassis.

• Range: Approximately 24 kilometers with standard ammunition, up to 30 kilometers with rocket-assisted projectiles
• Rate of Fire: Maximum of 4 rounds per minute, sustained rate of less than 2 rounds per minute
• Mobility: Maximum road speed of 61 kilometers per hour, limited off-road capability
• Protection: Only capable of withstanding light weapons and shell fragments, unable to counter modern precision strikes

In simple terms, this is an "adequate but not advanced" piece of equipment. The U.S. military is gradually replacing traditional self-propelled howitzers with more flexible truck-mounted artillery and long-range rocket artillery. The Taiwanese military's procurement of the M109A7 is largely due to a lack of better options—Europe's PzH 2000 is too expensive, and South Korea's K9 is not for sale, leaving them with no choice but to accept the U.S.'s "clearance goods."

PLA's Long-Range Firepower: From Following to Surpassing

In stark contrast to the Taiwanese military's "catch-up" procurement, the PLA's long-range firepower system has completed a three-generation leap.

First Generation: PLZ-05 (Type 05 155mm Self-Propelled Howitzer)

Standardized in 2005, it is China's first truly modern self-propelled howitzer. The performance data may seem unremarkable—range of 30-40 kilometers, rate of fire of 6-8 rounds per minute—but it has one key advantage: high production volume. According to publicly available annual reports from military industrial enterprises and satellite imagery analysis, the total production of the PLZ-05 and its variants has exceeded 1,200 units, more than four times the total number of the Taiwanese military's M109 series.

During a visit to a military industrial exhibition in 2019, an industry insider revealed, "The production line for the PLZ-05 has never stopped because export orders keep coming in." Countries like Kuwait, Saudi Arabia, and Bangladesh have purchased this model, ensuring production efficiency and spreading out R&D costs.

Second Generation: PCL-181 (Truck-Mounted Howitzer)

Making its debut at the National Day parade in 2019, it completely overturned the traditional design logic of self-propelled artillery. It no longer uses a tracked chassis but instead employs an 8×8 wheeled truck platform, reducing the weight from 30 tons for the PLZ-05 to 25 tons.

The biggest breakthrough is in strategic mobility. The PCL-181 can move directly on highways at a speed of 70 kilometers per hour without the need for heavy transport vehicles. This means an artillery battalion can be relocated from inland to coastal areas within 24 hours, while the Taiwanese military's M109 requires at least 3-4 days.

An easily overlooked detail: the logistical support for the PCL-181 is greatly simplified. It uses a civilian truck engine and transmission system, with high parts commonality, and maintenance costs are far lower than for tracked equipment. This is significant for artillery that needs to be deployed on a large scale.

Third Generation: PHL-16 (370mm Long-Range Rocket Artillery)

Strictly speaking, this is not a howitzer but a rocket artillery system. However, its emergence has changed the rules of the battlefield.

• Range: 150-370 kilometers (depending on the type of ammunition)
• Accuracy: Equipped with BeiDou/inertial navigation composite guidance, with a circular probable error of less than 10 meters
• Power: A single rocket's warhead weighs up to 150 kilograms, equivalent to a small tactical missile

Interestingly, the range of the PHL-16 covers the entire island of Taiwan. This means that a rocket artillery battalion deployed along the Fujian coast can strike all major targets in western Taiwan, while the Taiwanese military's M109 cannot reach the mainland at all.

Production Capacity Overwhelms: China's Military Industry's "Dimensionality Reduction Strike"

If we only look at the performance of individual pieces of equipment, the PLA's advantage may not be very obvious. But when you broaden the perspective to production capacity, the gap becomes a chasm.

According to a 2025 report from the U.S. Congressional Research Service, China's artillery production capacity is 12 times that of the United States. Specifically:

• United States: Can produce about 100 M109A7s per year (at full production capacity)
• China: Can produce about 300 PLZ-05/PCL-181s per year (at regular production pace)

This does not even include rocket artillery and ammunition production capacity. The annual production capacity of the rocket artillery production line of China North Industries Group exceeds 10,000 rounds, while the annual production capacity of the U.S. HIMARS rockets is less than 2,000 rounds.

In simple terms, this is not a difference in equipment generations, but a difference in industrial systems. Even if the Taiwanese military procures 22 M109A7s, it is merely a drop in the bucket in terms of quantity. The PLA can mobilize hundreds of artillery pieces and thousands of rockets in a short time, achieving "firepower coverage" rather than "precision strikes."

The Realistic Logic of Taiwan Strait Conflict

Many analyses describe the Taiwan Strait conflict as a "high-tech war," emphasizing air superiority and naval blockades. However, based on the experiences of the Russia-Ukraine conflict, long-range firepower remains one of the key factors determining the outcome of battles.

The reason is simple: while stealth fighters and missile destroyers are indeed important, they cannot continuously suppress enemy positions 24 hours a day. Artillery can. An artillery battalion equipped with PLZ-05 can rain down hundreds of shells on a target 10 kilometers away within 30 minutes, sustaining fire for hours. This kind of "blunt knife cutting meat" attack has a tremendous psychological and morale-destroying effect on the defending side.

The Taiwanese military's procurement of M109A7 is essentially an attempt to address this shortcoming. But the problem is: after deploying 22 howitzers, each defensive area can only receive 2-3 units. In contrast, the PLA can concentrate 50-100 howitzers in key directions, forming an absolute advantage.

An Overlooked Issue

What truly deserves attention is not the batch of M109A7s themselves, but the ammunition supply.

The U.S. has already exposed issues with insufficient production capacity for 155mm shells during the Ukraine war. In 2024, the U.S. is expected to produce about 300,000 rounds of 155mm shells for the entire year, while Russian forces can consume 20,000 rounds in a single day. If a conflict breaks out in the Taiwan Strait, how many shells can the U.S. provide to the Taiwanese military? Will this batch of M109A7s become "artillery without ammunition" decorations?

In contrast, China's ammunition reserves are estimated to exceed 10 million rounds, and production lines can rapidly scale up in wartime conditions. This may be the most asymmetrical aspect of the military balance in the Taiwan Strait.