Description
CAR mainspring to be used with higher pressure .45acp and 7.62×25 ammo to reduce cyclic rate. This spring should not be used with the 9mm setup.
STG Universal U7.62, U45, & STG 7.62
Sale!
Adjustable Bolt System Mainspring – Extra Heavy
Original price was: $12.00.$3.60Current price is: $3.60.
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