Free fitment tools

Which parts fit your gun?

Airsoft parts are platform-specific, so the first question before any upgrade is always whether the part physically fits your gun. These free finders match your exact platform to the magazines, hop-up buckings, inner barrels, nozzles and hop-up units that fit it, and check whether your gun is field-legal on FPS. Pick a finder below, match your gun, then compare live prices and stock across every retailer we track.

6 fitment finders Always free Live prices & stock
Free tool

Which magazines fit your gun?

Pick your platform and instantly see every compatible magazine, then compare live prices and stock across every retailer we track.

  • Cross-checked fitment by platform
  • Mid-cap, hi-cap and gas magazines
  • Live prices from every retailer we track
Airsoft magazines for a range of gun platforms
Airsoft hop-up buckings for a range of gun platforms
Free tool

Which hop-up bucking fits your gun?

Pick your hop-up chamber standard and instantly see every compatible bucking, then compare live prices and stock across every retailer we track.

  • Fitment grouped by hop-up chamber standard
  • AEG, gas pistol, VSR and GBBR buckings
  • Live prices from every retailer we track
Free tool

Which inner barrel fits your gun?

Pick your gun's hop-up cut, read the correct length for your platform, then filter by length and bore and compare live prices across every retailer we track.

  • Matched by hop-up cut and length in mm
  • AEG, gas pistol, VSR and GBBR inner barrels
  • Filter by length and bore, compare live prices
Airsoft inner barrels in a range of lengths and bores
Airsoft AEG air nozzles and gas loading nozzles in a range of lengths
Free tool

Which nozzle fits your gun?

Pick your platform and see every compatible nozzle. On AEGs, read the correct length for your gearbox, then compare live prices and stock across every retailer we track.

  • AEG, gas pistol, GBBR and HPA nozzles
  • AEG air nozzles matched by length in mm
  • Compare live prices across every retailer we track
Free tool

Which hop-up unit fits your gun?

Pick your platform and see every compatible hop-up unit and chamber, then compare live prices and stock across every retailer we track.

  • AEG and gas pistol hop-up units and chambers
  • Grouped by the platform each unit is built for
  • Compare live prices across every retailer we track
Airsoft AEG hop-up chambers and pistol hop-up units
ACETECH AC6000BT airsoft chronograph for measuring muzzle velocity
Free tool

Is your gun field-legal?

Enter a measured FPS and instantly see the muzzle energy in joules, the equivalent FPS at every BB weight, and whether it passes your field or country limit.

  • FPS to joules at any BB weight
  • Field and country power-limit checks
  • Spring rating to expected velocity

Planning a full build?

Once you know which parts fit, the Builds tools help you plan a complete upgrade path for your gun, track the parts you have chosen, and compare the total cost across retailers.

Frequently asked questions

What does fitment mean in airsoft?

Fitment is whether a part physically fits your specific gun. Airsoft parts are platform-specific: a magazine, bucking, inner barrel, nozzle or hop-up unit made for one platform will not automatically fit another. These finders match your exact gun to the parts that fit it, so you buy the right part the first time.

How is fitment different from an upgrade recommendation?

Fitment answers "will this part fit my gun?". An upgrade recommendation answers "which part should I buy to get more performance?". Start with fitment to narrow down the parts that physically fit, then use the Upgrade Finder or the Builds tools to decide which of those parts to buy.

Are these fitment finders free?

Yes. Every finder on this page is free to use. Match your gun, see the parts that fit, and compare live prices and stock across every retailer we track.