• Grams Spring/Follower Kit 13 Coil STI/SV

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Grams Spring/Follower Kit 13 Coil STI/SV

Other products by Grams Engineering

Item #: FKSX-13
Our Price: $18.90


The same follower works in both STI and SV mags. These new kits use a unique locking system to keep the follower from coming off the spring. The follower and the spring have been completely redesigned for better reliability and longer life. These are a must have for any serious shooter. These will not work in the new STI 10 round mags which take a narrower spring. The follower is the same for all calibers(except 9mm with Spacer). Only difference is the length of spring. Use the 11 coil for 140mm or less mags with flat base pads in both 38 and 40. Use the 13 coil for 140mm mags with extended base pads(7, 8, or 11mm) or 170mm mags.

Important Info- Grams followers are designed to allow you to tune the follower to your gun and mags for slide lock. If you do not want to tune your follower and want slide lock back do not buy these followers. Without tuning they may lock back with 1 round in the mag. This gives you plenty of room for adjustment to fit your particular equipment. If you do not want slide lock back just trim slide stop tab or Follower shelf to bypass Slide stop tab.


Average Rating:
(based on 19 reviews)

Showing 1 - 5 of 19 Reviews:

by DC
on 1/28/2021
from NE
Time to replace my springs for the season. Grams kits simply work. They have been very consistent and thanks Shooters Connection for keeping them on hand.
by dpostman28
on 1/20/2021
great quality product
great product. always in time when I expect to receive the item I purchased unlike any other store I experienced. I will definitely shop here only. best service ever. 
by Gary
on 10/14/2020
Mag spring kit
Good quality spring and follower. Works well.
by ToddM
on 6/17/2020
Love it.  Works as designed!
by Bushmeat
on 5/22/2020
Fixed Gen 1 STI
Had a Gen 1 STI magazine that was never reliable. This follower and spring was suggested to me as the most cost-effective possible remedy. Hey, it worked! Thanks, Shooters Connection.
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