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Factory made parts from the Glock Austrian plant. This is the full lower parts kit which includes: magazine catch spring, magazine catch, slide lock spring, slide lock, locking block, trigger mechanism housing w/ejector, connector (5lb), trigger spring, trigger and trigger bar, slide stop lever w/ spring, trigger pin, trigger housing pin, and the locking block pin. Will fit any gen 3 Glock standard size lower but has the G19 (compact) sized slide lock spring (which is the only unique part that is size specific). Also, the locking block design changed numerous times over the years so this locking block may not be compatible with your lower.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.