USGI 20rd AR-15 mag jamming on last round -need help

S

Spirex288

New member
I just picked a used USGI Adventure Line 20rd mag at a local gunshow. This mag has an alloy follower.
Using American Eagle 55gr FMJ loads, the last round will jam against the bolt and locking lug on the lower left side.
It appears that the follower can move around not positioning the last round to properly feed. Is this a mag spring issue or do I need a new follower that has a tighter fit inside the mag body?
 
Adventure LIne are normally ok... but sounds like the spring is worn out..... try streaching it just a bit.... .... we almost never put more than 17-18 rds in a 20 rounder just for that reason
 
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