ETS Group SW9MP21 9mm Luger 21rd Clear Polymer Magazine for S&W M&P

The ETS Group SW9MP21 is an extended 21-round 9mm Luger pistol magazine purpose-built for the Smith & Wesson M&P family of striker-fired pistols (excluding the Shield variant).

Constructed from extreme impact-resistant advanced polymer, this magazine delivers excellent durability with superior resistance to heat, cold, and UV exposure. Its translucent clear body lets you instantly check your round count at a glance, eliminating guesswork during reloads or at the range.

The 21-round capacity offers a significant upgrade over standard-capacity M&P magazines for range training, competition, or as a high-capacity backup. Designed for reliable feeding and backed by ETS Group's reputation for quality, the SW9MP21 is a versatile extended magazine for the S&W M&P and M&P M2.0 platform.