SKU: MGPMGLK-18
UPC: 708279015991
MPN: GLK 18
The ProMag GLK 18 is a 10-round aftermarket magazine built specifically for the Glock 36 in .45 ACP. The factory Glock 36 ships with a flush six-round single-stack magazine, so this unit gives Glock 36 owners four extra rounds and a longer grip surface for shooters who want a fuller hold on a compact .45. It works as a range and spare magazine for the slimline 36 platform, and the 10-round count keeps it compliant in jurisdictions that cap pistol magazine capacity. Buyers searching for a Glock 36 extended magazine or 10-round mag will find this is one of the few aftermarket options sized for the single-stack .45.
Construction is a proprietary DuPont Zytel-based polymer body wrapped around a full-length steel internal insert, which adds rigidity and helps the feed lips hold their geometry under load. Inside, ProMag uses an injection-molded follower and a heat-treated chrome silicon wire spring for consistent feeding through the full 10-round stack. The body wears a black finish, and the magazine is made in the USA per ProMag specifications. ProMag backs the GLK 18 with a lifetime guarantee against defects. This is an aftermarket product and is not manufactured, authorized, or warranted by Glock, so confirm fit and function against your specific Glock 36 before relying on it for carry. We carry a range of handgun magazines for shooters building out a spare loadout.
Most Glock 36 owners pick up a magazine like this to extend range sessions without constant reloading, to stock spares, or to add a fuller grip for larger hands. The 10-round capacity nearly doubles the factory six-round count while keeping the slim single-stack profile. Run it alongside your factory mags and verify reliable feeding with your defensive ammunition before trusting it for anything beyond range use. Pair it with a magazine loader to save thumb wear during long sessions, and browse our broader magazines selection for other platforms and capacities.
It holds 10 rounds of .45 ACP. That is four more than the factory six-round flush Glock 36 magazine, giving you a higher-capacity spare while keeping the single-stack slimline profile of the 36.
No. The GLK 18 is sized specifically for the single-stack .45 ACP Glock Model 36. It is not interchangeable with the double-stack Glock 30 or other .45 ACP Glock pistols, which use a different magazine body.
ProMag uses a proprietary DuPont Zytel-based polymer body reinforced with a full-length steel internal insert. The follower is injection molded and the spring is heat-treated chrome silicon wire, all backed by a lifetime guarantee against defects.
No. The GLK 18 is an aftermarket ProMag product. It is not manufactured, authorized, endorsed, or warranted by Glock. We recommend confirming reliable feeding with your specific pistol and chosen ammunition before relying on it beyond range use.
The 10-round capacity meets the limit in jurisdictions that cap pistol magazines at 10 rounds. Magazine laws vary, so verify the current rules for your state and locality before ordering.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
