Rifle Basix CZ-527 and 550 Trigger SILVERAdjustable from 12 oz. to 3 lbs. Replaces "Set" Triggers on CZ 527 and 550 Rifles Rifle Basix CZ-527 Trigger - This trigger converts the factory "Set" triggers to single stage triggers. Replaces the factory trigger on CZ 527, 550, and 550 Magnum... All the models with "Set" triggers. Fully adjustable from 12 oz. to 3 lbs. Uses the factory safety and may be installed by do-it-yourself... We have the installation instructions available for download from our website. This trigger comes complete with printed instructions, hardware pack, and adjustment wrench. It produces light, clean, crisp, operation with a single stage function. Excellent for Varmint/Target shooting or hunting. See all of our Rifle Basix trigger systems at our Rifle Basix Home Page!