Glock 17 magazine with Wilson CombatŪ Extra Power Music Wire Magazine Spring, 9mm, 33 rounds.
Last round bolt hold open can be impaired when factory Glock magazines get heavily carbon fouled. To enhance 100% reliable hold open in extreme use we recommend replacing Glock factory magazine springs with extra power magazine springs.
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NOTE: Not available for shipment to: CA, CO, CT, HI, MD, MA, NJ, NY or Washington DC and may be restricted in other local jurisdictions. It is the customer's responsibility to be aware of and abide by all applicable local laws. Check your local city, county and state laws before ordering.