One that is made for it. They hold 10 rounds and run about 35 USD.
This would be a Browning Challenger .22 pistol made in 1970.
Need clip fpr cal. 6.35 M/M
Try e-gunparts.com, Brownell or Midway.
You need to submit the kind of firearm is it? Pistol, rifle, shotgun?
Never saw a 25mm pistol magazine (proper name for a clip). That would be a bullet 1 inch wide. If you mean .25 caliber, no. Just as different cars use different spark plugs and oil filters, so different guns need different parts.
Post or send me the particular information on your rifle, pistol or shotgun.
Try e-gunparts.com
Try want ads, for sale ads, pawn shops, gun shops, gun shows, estate sales.
One made for it.
Crosman still services this pistol it is best to contact them and tell them what you need, their address is: Crosman Corporation7629 Routes 5 & 20East Bloomfield, NY 144431-800-7AIRGUN (724-7486)
Need to know what year the Challenger is.
U cant get the challenger in most wanted on carbon u can