Are Shield Arms To Be Trusted and Carried for EDC?
This video from SPN Firearms critically evaluates Shield Arms S15 and Z9 magazines for Glock handguns, particularly the Glock 43X. The instructor, with extensive experience, highlights common reliability issues reported by users and his own negative experiences with Z9 magazines, citing spring failures and feeding problems. While acknowledging the appeal of increased capacity, the core message emphasizes prioritizing reliability for self-defense over magazine capacity, drawing parallels to the importance of reliable ammunition and weapon lights in critical encounters. The video also touches on aftermarket Glock modifications and the importance of thorough testing for any firearm setup intended for carry.













