The Smart Way to Buy Guns Online
The FN 509 parts worth buying, with live retailer prices. Includes what FN own manual calls the optic cut, the patent number that tells you which plates fit, and why this list runs to eight picks instead of ten.
The Mossberg 590 parts worth buying, with live retailer prices. Includes the one fitment rule Mossberg put in their own manual that almost nobody repeats, and how to spot a whole shotgun hiding in a parts search.
The Glock 21 parts worth buying, with live retailer prices. Includes what GLOCK own 2026 Buyer Guide says about whether the .45 is getting a Gen6, and why that decides which optic plates and triggers you should buy.
The HK VP9 parts worth buying, with live retailer prices. Includes the one VP9 choice HK own manual says you cannot undo, the optic plate the gun will not take a red dot without, and why there is no trigger on the list.
The SIG P229 parts worth buying, with live retailer prices. Includes what SIG own manual actually says about the SRT trigger kit, the takedown step it changes, and the magazine trap that catches P229 buyers.
The Springfield XD parts worth buying, with live retailer prices. Includes what we found when we counted Springfield current XD lineup, and the new XD Mod.4 that changes which optic and grip parts you need.
The Glock 20 parts worth buying for field and hunting use, with live retailer prices. Includes a correction: we checked GLOCK manual and they do not say what this page previously claimed about cast lead bullets.
The nine Glock 34 upgrades worth buying in 2026, and what USPSA actually permits, read out of the 2026 rulebook. Carry Optics caps magazine length at 141.25 mm, bans ported barrels and compensators, and sets no minimum trigger pull. Production allows no optic at all.
The Sig P226 parts worth buying, ranked, with live retailer prices. The badge on the slide is not what decides fitment: your trigger system and grip frame are, and they control the two best upgrades on the gun.