ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturer's defects. Magazine springs are precision wound using heat-treated chrome silicon wire and each and every step of the assembly process is checked and double checked in order to maintain the same consistent level of quality. Features : 32 - Round Capacity Precise Manufacturing Long Term Reliability Durable Polymer Construction GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only. MAGAZINE CAPACITY NOTICE This magazine exceeds 10 rounds of capacity and may be restricted or prohibited in CA, CO, CT, DC, HI, IL, MA, MD, NJ, NM, NY, RI, VA, VT, WA, and select municipalities. It is the buyer's responsibility to verify local, state, and federal laws before purchase. Orders that cannot ship to a restricted address will be canceled and refunded.