This drum magazine has housing constructed of proprietary DuPont Zytel based polymer. The magazines upper tower has a full length steel insert that is stamped and welded like the factory magazine. Additional components include an injection molded magazine follower and a spring formed from heat treated stainless steel. 
Fits Glock 48 and 43X
Drum housing constructed of proprietary DuPont Zytel based polymer
Magazine upper tower has full length steel internal insert stamped and welded like the factory magazine
Injection molded magazine follower
Magazine spring formed from heat treated stainless steel 
Disclaimer: This item is NOT marked "In Stock". We will contact you within 12-24 hours by email if your order is on backorder with our distributor and will take longer than the 5-7 business days it takes us to ship out. Please do not order if you need this item shipped immediately.