PTS EPM1S Mid-Cap (170R)

Price: $26.36 – $51.20 — In stock at 15 retailers.

Prices last checked July 30, 2026 across 23 retailers.

The PTS EPM1-S AEG magazine, made with the same technology as our EPM1, is a 20R length short M4 magazine that holds an incredible 170 round bb capacity and offers the same reliability that all PTS magazines have long been famous for. It is compatible with most Airsoft AR-15 M4 AEGs including Tokyo Marui, KWA, G P, VFC, including the HK416, PTS PDR-C, PTS ERG series, PTS Masada AEG, the AMOEBA AM Variants, and many more. The magazine is available in Black and Dark Earth. The PTS® Enhanced Polymer Magazine ONE, or EPM1, is the most advanced and highest capacity spring loaded AEG magazine ever produced. Aptly named the EPM1, the magazine is the FIRST in many ways: The EPM1 is the First collaborative development between PTS and Odin Innovations The EPM1 is the First spring loaded AEG magazine to rival the capacity of a high cap mag The EPM1 is the First AEG magazine with a “Fuel Gauge” window to indicate full or remaining bb load The EPM1 is the First magazine to reliably achieve both high load capacity and high rate of fire performance Externally, the EPM1 has also been updated significantly. As with the original EPM and all PTS polymer products, the EPM1 shell is made with Dupont Zytel® polymer which makes it extremely durable and strong. Another carryover feature is the continuous mag well guide to reduce snagging when drawing from or inserting into pouches or the rifle mag well. Our signature EP texture has been implemented onto the shell to give the magazine a positive texture for better grip and tactile feel. The texture along the spines have been changed to ridges for even more positive tactility and allows the EPM1 to be compatible with the Magpul Maglink® Coupler. The baseplate of the EPM1 has also been completely redesigned. The slide-in design makes the baseplate more durable and resistant to damage or popping off if the magazine is dropped. It is also significantly slimmer than the first generation EPM’s so stacking the magazines in pouches or during storag

PTS EPM1S Mid-Cap (170R) price comparison: the lowest price is $26.36 at Airsoft Atlanta, the highest is $51.20, and the median across 31 tracked listings is $29.99. Comparing retailers can save up to 49% ($24.84) versus the highest-priced listing.