The Allen key compartment allows you to have it ready whenever you want to adjust your hop-up.
Double Tap Designs Holster for the SSX23 & SSX303. Also compatible with other NBB by Marui, Y&P, STTI, ASG, and KJW.
It allows you to carry your SSX23 with all accessories attached.
The included 2mm Allen key can be put into the holster.