PUNE, INDIA , June 28, 2026 — India's Defence Research and Development Organisation (DRDO) has officially initiated the development of two next-generation ammunition technologies—Polymer Cased Ammunition (PCA) and Cased Telescopic Ammunition (CTA)—to modernize infantry weapon systems and improve the operational effectiveness of future small arms.
The program is being led by the Armament Research and Development Establishment (ARDE) in Pune. Tenders issued by ARDE in June 2026 invite industry participation for the development of advanced polymer cartridge cases for both ammunition types. The initiative seeks to replace conventional brass and steel cartridge cases with lightweight polymer-based alternatives, reducing ammunition weight while improving weapon performance and manufacturing efficiency.
Polymer Cased Ammunition (PCA)
Polymer Cased Ammunition (PCA) replaces the traditional metallic cartridge case with a high-strength composite polymer. The lighter material allows soldiers to carry more ammunition without increasing their combat load, improving mobility and endurance during operations.
Unlike brass, polymer acts as a thermal insulator rather than a heat conductor. After firing, much of the heat leaves the weapon with the ejected cartridge case, helping reduce chamber temperatures and lowering the risk of heat-related issues during sustained firing.
Polymer cases can also be manufactured through injection molding, simplifying production and reducing dependence on strategic metals such as copper and brass. Their corrosion resistance further improves storage life and durability in different operating environments.
PCA is intended for use in assault rifles, machine guns, and other standard infantry small arms where weight reduction provides operational benefits.
Cased Telescopic Ammunition (CTA)
Cased Telescopic Ammunition (CTA) features a redesigned cartridge in which the projectile is fully enclosed within the propellant inside a cylindrical case. This produces a shorter and more compact round while maintaining the same caliber and ballistic performance.
Its cylindrical shape improves feeding reliability, reduces the likelihood of weapon jams, and allows engineers to design more compact automatic weapon systems. Uniform ignition of the surrounding propellant can also produce more consistent chamber pressures, contributing to stable ballistic performance.
CTA is designed for next-generation infantry rifles, light machine guns, and automated weapon systems where compact ammunition and reliable feeding are important.
Benefits for Infantry Operations
The adoption of PCA and CTA could significantly improve infantry operations by reducing the weight carried by soldiers, allowing them to carry more ammunition or additional mission equipment without increasing their overall load.
Lighter ammunition also improves military logistics by enabling transport aircraft, trucks, and supply vehicles to carry larger quantities of ammunition per shipment. At the same time, improved heat management in PCA and optimized feeding in CTA can reduce wear on weapon components and improve long-term reliability.
The technologies also support India's efforts to reduce dependence on imported raw materials and strengthen indigenous ammunition manufacturing capabilities.
Future Development
The PCA and CTA programs are currently in the industry collaboration phase, with tenders scheduled to close in mid-July 2026. Following material development, the ammunition will undergo testing to evaluate reliability, safety, durability, and compatibility with current and future weapon platforms.
Once successfully developed, these technologies are expected to support future Indian Army small arms programs while strengthening India's self-reliant defense manufacturing ecosystem. By focusing on lightweight materials, improved reliability, and efficient cartridge designs, DRDO aims to enhance the effectiveness of India's future infantry weapon systems.
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