PTS EPM1-S Mid-Cap Airsoft Magazine for M4 / AR15 170 BBs — Black

The PTS EPM1-S is a mid-cap magazine for AEG M4 and AR15 platforms, built in a short format inspired by 20-round magazines, with a capacity of 170 BBs. It is an airsoft product designed for players who want consistent feeding reliability without the rattling noise typical of hi-cap magazines.

A transparent side window with an orange indicator lets you check remaining BB count at a glance. When the last BB is fired, the orange follower rises into the feed lip and signals an empty magazine without ambiguity. The spring and follower maintain consistent feeding even at high rates of fire and with heavy BBs up to 0.49 g, without jams or slowdowns, making it compatible with DMR builds as well.

The magazine base is shaped with a revised angle that improves stability in supported shooting positions and makes extraction from mag pouches easier. A mid-cap magazine feeds silently and requires no winding during use, unlike hi-caps: the trade-off is that capacity is fixed and cannot be expanded, meaning you need to carry more magazines compared to a hi-cap setup.

Key points

• Short format inspired by 20-round magazines: reduced profile without sacrificing operational capacity
• Side-visible orange indicator: shows remaining BBs and signals empty as soon as the follower rises
• Reliable feeding with BBs up to 0.49 g: suited to high-cycle AEGs and DMR configurations
• Angled base: improves stability on the ground and speeds up extraction from pouches
• Silent operation typical of mid-caps: no winding required, no BB rattle