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AIR RIFLE MAIN SPRING FROM CHINA through Aliexpress

Posted: Wed Jun 06, 2018 1:46 pm
by Vishnu2017
Dear IFGIANS,
1 month before am ordered 4 Air Rifle main springs through online shop ALI EXPRESS they charged me RS.645 for 4 springs , am really excited for this price
Thickness diameter: 4.0mm ;
Out diameter:20mm;
Lenght:300mm;
Material: steel;last week am received the parcel, am shocking 4mm thicknesses really too heavy, inner dia 12 mm , its not fit for our ihp and other Kolkata make spring guides, cant insert the spring guide in to the spring, guides are 13 mm dia, but the seller never said the inner dia, they are not access the return ,
my question for the seniors .
What is the use of the 4 MAIN springs?
Is it fit for any other spring guides,?
4mm spring dia too heavy, is it heavy and complicated to cocking, ? , if installed will give good power, jerks and de compression make s any other damages in receiver tube?
Plz light up the topic