Our testing showed that the magazine catch height can vary between models and versions. We will ship with 3 different magazine catch shims, pre-installing the shortest that worked best in our 888.

Feed Lips and Gasket must be installed by the customer. https://airtac.me/instructions

Features:

1. Compatible with most M4 magazines, works best with EPM and EPM1s

2. BB retention mechanism to reduce BB loss during magazine changes

3. M4 magazine NOT included

4. US Style push fitting as standard, can easily be swapped to EU style 6mm Push Fitting (available on our website under HPA accessories section)

5. Uses a glock valve and valve knocker, which are supplied and installed. Adapter is pressure tested before shipping