turn-n-burn Posted January 19 Share Posted January 19 Curious what Wolff spring anyone is running in a 7 round mag tube extension. Thought it would be easy enough to navigate their site but I can't find anything specific to the M4 with or without the extension tube. Or...if anyone else has another manufacture suggestion...let me know. I just use them for some handgun springs and they've been reliable. Quote Link to comment Share on other sites More sharing options...
JustBC Posted January 19 Share Posted January 19 For my M4 with 7 round tube, I am using SKU 16097 from this page https://www.gunsprings.com/BENELLI/cID2/mID10/dID32 2 Quote Link to comment Share on other sites More sharing options...
Ihrinwe Posted January 20 Share Posted January 20 JustBC posted the correct one. If you ordered an aftermarket 7 shell tube a lot of them ship with a new spring. Might want to check before you order separately. Quote Link to comment Share on other sites More sharing options...
turn-n-burn Posted January 22 Author Share Posted January 22 thank you for the help. Quote Link to comment Share on other sites More sharing options...
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