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SFC - The Bulgarian manufacturer of springs

We manufacture gun springs and gun parts SINCE 1878. ISO-9000 certified! AQAP certified! Firearms licensed!

About us Machine-gun belts Gun springs Cold-coiled springs Engineering
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Products

  1. Railway bogie suspension springs. Y25 bogie suspension springs. Suspension springs for trucks/trailers/cars. Hot coiled (hot wound) springs.

    The suspension springs for railway wagons (bogie suspension springs) are manufactured according to UIC standard. Our suspension springs fit in freight and passenger coaches and locomotive bogies.

     

    Our particular speciality is the production of springs for Y25 bogie and its upgrades Y25 bogie and its analogues are widely used in Europe. We manufacture suspension springs for other types of railway bogies as well. Railway suspension springs are manufactured as per customer's drawings/requirements and UIC. We manufacture also other springs used by the railways.

     

    Spring data: bar diameter=60mm max; bar length=6700mm max

     

    We make suspension springs for trams, underground, passenger cars, lorries, agricultural vehicles etc.

     

    We manufacture high quality springs for machinery, mining, military, agriculture, power industries.

    Our springs are also used in earthmovers (graders, excavators, tractors) & in the automobile industry as suspension springs for cars/trucks/trailers. 

     

    We are the only manufacturer of suspension (hot coiled; hot wound) springs in Bulgaria!  

     

  2. Cold-coiled springs: wire diameter 0.2-15 mm. We produce all types of cold coiled springs: compression springs, extension springs, torsion springs, prismatic springs, zigzag springs, armour-type springs, springs for lip-type seals. We were the only cold spring producer in Bulgaria till 1990. As a reputable spring maker we guarantee excellent quality and 100% control of the spring characteristics. Stampings & complicated pressings from strip and wire.

  3. Springs for guns (pistols, submachine guns and machine guns): We manufacture all types of springs for guns: multi-wire, prismatic, magazine springs, blade gun springs. Our gun springs (for pistols, rifles, submachine guns, machine guns, cannons) are made according to the highest military standards. We produce 95%of the gun springs used in Bulgaria. As a famous springs manufacturer we produce large quantity of gun springs for export.

  4. Ammunition belts and ammo links; steel cartridge belts (links) for machine guns (auto-cannons); metallic links for munitions:

     -       Ammunition links for all NATO machineguns cal. 5.56-40 mm(M27 link 5.56x45mm; M13 link 7.62x51mm;  7.62x63 mm (M1); 12,7x99 mm (M9); 20x82 mm; 20x102 mm; 20x110 mm; 20x128 mm; 20x139 mm;  25x137 mm;  27x145 mm;  30x113 mm; 30x150 mm; 30x173 mm;  35x228 mm; 40x53 mm)

    -          7.62x54mm belt for PK, PKM, PKMS, PKS (all models Kalashnikov machine guns);  

    -          7.62x54mm belt  for PKT machine gun; 

    -          12.7x108 mm belts for NSV/NSVT Russian machine guns (belt 6L-19);

    -          12.7x108 mm belt for DShKM Russian machine guns

    -          12.7x108 mm ammo links for YakB Russian machine guns

    -          14.5x114 mm belt for KPV/KPVT

    -          23x152 mm links ZU-23-2, ZSU-4 SHILKA & SAU-23; 

    -           23x115 mm links for GSh-23/ GSh-23L Russian aircraft cannons; 

    -          30x165 mm links for 2A42, 2A72, 2A38 Russian auto-cannons ;

    -          30x165 mm links for GSh-30 Russian aircraft cannons ( GSh-30-1 and GSh-30-2); 

    -          30mm belts for AGS-17 Russian automatic grenade launcher,

    We are the only manufacturer of machinegun belts (links) in Bulgaria .

  5. Ammunition boxes: a) Ammo box for ZU-23 (left & right): Ammunition boxes (ammo boxes) for 23mm ZU-23-2 Russian machine-gun (2A13) - anti-aircraft: Drawing No. ASSY 09/2A13 (complete set: right box and left box)  b) Ammunition boxes for 12.7x108 mm DShKM/NSV/Utios (50rds)  c) Ammunition boxes for 7.62x54 mm PK/PKM (100rd/200rd/250rd)

  6. Magazines for rifles, light machine guns, submachine guns: We manufacture gun magazines for different systems - NATO, Russian/Soviet, Israeli,  The gun magazines are produced in full accordance to the original drawings (license documentation). Steel & polymer rifle magazines. 

    -          5.56x45mm magazines for M16/AR15 rifles: steel & polymer; 30-round/40-round/10-round

    -          7.62x39mm magazines for AK47/AKM/AKS/AKMS (Kalashnikov): steel & polymer; 30rd/40rd/10rd/6rd/5rd

    -          7.62x39mm magazines  for RPK/RPKS Soviet/Russian light machine guns Kalashnikov  (40 rounds; polymer); 

    -          5.45 x39 mm magazine for AK74; polymer; 30rd 

    -          all Izraeli magazines /5.56x45mm magazines for 'Galil' (35 rounds);  5.56x45mm magazines for 'Tavor' TAR-21 (30 rounds);9x19mm magazines for 'UZI' (32 rounds);9 mm cartridge magazines for  'Micro Tavor'' (32 rounds) etc/

    We are the only manufacturer of rifle magazines in Bulgaria.

BEST QUALITY AT  BEST PRICES!

 

Information of our military products (photos etc) is available on our Brochure

Information about our CIVIL products is available at http://www.railway-bogie-springs-manufacturer.com/index.html 

Copyright © 2005-2026 SFC  Last modified 18.06.2026

email: info@springsmanufacturer.com