The Glock 17 is the full size 9 mm that started the Glock line, and still the model most competition parts are made for. That makes it the Glock with the widest choice on this site, from sights to a full Toni System grip and reload setup.
Sights and red dot
The first question is MOS or not: a MOS 17 swaps its cover for a plate, an older slide carries the dot in its rear sight dovetail. Sights split the same way, with co-witness sets for MOS and standard sets for classic slides. Start with Optics ready plates for Glock 17, Red dot mounts for Glock 17 and Sights for Glock 17.
Grip and reload
Gen 5 owners get a grip film in Grips for Glock 17 and a choice of two magwell widths in Magwells for Glock 17. Toni System base pads go from flush to nine extra rounds, with the longest ones reserved for Open style setups, in Base pads for Glock 17.
Weight
An aluminium or brass frame mount bolts under the barrel and keeps the muzzle down in fast strings; both are in Frame mounts for Glock 17.
Frequently asked questions
Does the Tactical magwell need special pads?
It does: use Toni System pads of +1 or longer, with the standard backstrap fitted.
Are gen 4 grips the same as gen 5?
The grips and magwells here are made for gen 5 frames.