NMP Air Rifle Mainsprings 

We now have in stock our own manufactured brand on air rifle mainsprings 

The world's number 1 square mainspring 

Will fit most Guns 

Warning: Fitting a new mainspring can take your rifle over 12 ft/lbs. You must check your guns power 

It is illegal to have a gun over 12 ft/lbs with out a firearms certificate 

No.1: ALL B.S.A. Except Meteor, B.S.A. Airsporter, Mercury, B.S.A. Supersport, B.S.A. Superstar, TX200 & TX300 LESS 3 COILS, B.S.A. Goldstar, Anschutz 335, Diana Original 34, 35, 38, 45, 48, 52, & 50, R.W.S., 24, 27, 34, 45, 50, Relum, All Air Arms Sidelever Models, Weihrauch H.W.85, H.W.55, H.W.50, H.W.90, HW95, HW99, Haemel, Lion, A.S.I. CF16/20 Webley MK3 (if the spring guide is reduced by 20 thou) 

No.2: B.S.A. Meteor MK1-MK5, Millbro, Diana G80 and 27, S.M.K., Westlake, B2, Norica (does not fit Norica Dragon ), Lion, 82, Cometa 300, 200, 400, 100, 5, Baikal. 

No.3: B.S.A. Superstar (12ft-pounds only), Webley, Vulcane, Tracker, Osprey, Omega, (all models except Eclipse and MK3), ALL A.S.I. Molels Except CF.16-12 ,A.S.I.Sniper, Magnum, Paratruper, (and all other A.S.I. models), ALL Gammo Models, B.S.A. Meteor MK6, Cometa 50, 

No.4: Weihrauch H.W.35 (Diana Orig R.W.S. 52, 48 'Max Power') & Weihrauch H.W.80 if (PK1) POWER KIT IS FITTED 'Max Power', F.A.C. HOLDERS ONLY,  

No.5: Weihrauch H.W.80, Webley Eclipse 

No.6: Weihrauch H.W.77, H.W.97, HW98, Feinwerkbau 127 Sport, also larger original models if (PK1) POWER KIT IS FITTED 

No 7: Feinwerkbau 300S ( 2 mainsprings )