Extreme Duty 11” Coil MBX Z-Max Spring for use with STI style/Para/Armscor Style
140mm Magazines
140mm Magazines
(7)
Average rating 10 out of 10
( based on 7
reviews )

Excellent
As advertised.
Springs is springs
Not much to say, this is my yearly replacement mag springs order. Shooters Connection does a great job which is why i keep buying from them.
Yes!
Works great, shot last weekends match with no issues.
The #11 spring..
It's a spring, what can I say!
Jr.
Perfect fit