PTS Enhanced Polymer Magazine ONE (EPM1 / EPM1-RX) 250rd AEG Mid-Cap

The PTS® Enhanced Polymer Magazine ONE (EPM1) is one of the most advanced and highest-capacity spring-loaded AEG magazines ever produced. The updated EPM1-RX revision builds on the proven EPM1 platform with refined internal tooling for even smoother and more consistent feeding, while retaining all of the features that made the original an industry benchmark.

EPM1-RX Update: The EPM1-RX introduces newly tooled internal shells with more precise dimensions and a smoother BB channel for improved feeding consistency, especially under high rates of fire. RX internals are easily identified by their grey internal shell and EPM1-RX markings. Note: Dark Earth (FDE) EPM1 magazines currently retain the original black internal shell.

Aptly named the EPM1, this magazine was the first in many ways:

• First collaborative magazine development between PTS and Odin Innovations
• First spring-loaded AEG magazine to rival high-cap capacity at ~250 BBs
• First AEG magazine with a “Fuel Gauge” window showing remaining BB count
• First to reliably combine high capacity with high ROF performance

Externally, the EPM1-RX retains the same proven shell design as the original EPM1. Constructed from Dupont™ Zytel® reinforced polymer, the magazine offers exceptional durability while remaining lightweight. The continuous magwell guide reduces snagging during reloads, while the signature EP dot texture and ridged spine surfaces provide a secure grip and compatibility with the Magpul Maglink® coupler.

The redesigned slim slide-in baseplate improves durability and resists popping free when dropped. Its angled heel allows the magazine to act as a monopod during supported shooting, and the integrated dot matrix makes magazine identification easy. The ribbed front ledge provides positive indexing when drawing from pouches or plate carriers.

The standout feature remains the Fuel Gauge window. The high-visibility orange follower indicator lets you instantly see whether the magazine is full, partially loaded, or empty. As BBs are fired, the indicator travels down the window until it reaches the bottom when depleted.

With a true 250+ round spring-fed capacity, the EPM1-RX delivers high-cap endurance with mid-cap reliability. It is compatible with most AR-15 / M4-pattern AEGs and remains a top choice for competitive players, milsim use, and high-tempo gameplay.

Features

• Dupont™ Zytel® reinforced polymer shell
• Approx. 250+ BB capacity (spring-loaded mid-cap)
• EPM1-RX revised internal shell with smoother BB channel
• High-visibility Fuel Gauge BB level indicator
• Enhanced follower and high-efficiency compression spring
• Low-friction internal shell design
• Continuous magwell guide to reduce snagging
• EP dot texture and ridged spine for secure grip
• Slim monopod-style baseplate with ID marking matrix

Specifications

Color: Black, Dark Earth
Material: Dupont™ Zytel High-Performance Reinforced Polymer
Dimensions: 180 × 72 × 26 mm
Weight: ~207 g (empty)
Capacity: 250+ rounds

Compatibility

• Tokyo Marui-style AR-15 / M4 AEGs
• G&P AR-15 AEGs
• KWA AR-15 & ERG series
• PTS ERG series
• PTS Masada AEG
• PTS PDR-C AEG
• VFC AR-15 & HK416 AEGs
• Classic Army AR-15 & HK416 AEGs
• AMOEBA AM series AEGs

Disclaimer: This product is intended for airsoft, training, and simulation use only. Improper use, including use with real firearms, may cause serious injury. PTS assumes no liability for misuse.