The new MBX extreme tube features newly designed body contour running the full length of the magazine for improved reliability and performance allowing for a wider follower to improve stability also featuring round location holes for 10 & 21 in the 40 cal, 10 & 24 in 9 and precision cut feed lips.
*MBX tubes designed to work exclusively with MBX base pad
*MBX tubes designed to work exclusively with MBX base pad
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