Drop-ins:
No disassembly of the magazine is required - It just snaps in/out of the top of the magazine in a few seconds using a 3/32" hex key.  No need to buy dedicated magazines for the 450.(You can also use the firing pin from your rifle as an installation tool pinch)  It works well in most any of the good quality aluminum and most steel magazines.  

Mil-Spec:
Mil-Spec Follower for 450 Bush master, 458 S O C O M, 50 Beo-wulf. Condition is New. Shipped with USPS First Class Package. ONLY FITS IN STEEL STAMPED MAGS!!

Magpul:
Magpul Pmag Follower for 450 Bushmaster, 458 S O C O M, 50 Beo-wolf. Condition is New. Shipped with USPS First Class Package.
Fits 10, 20, and 30 round Magpul Gen3. Groove is designed for 450 bushmaster but will likely also work with .50 Beowulf, and 458 Socom. Note: If you're using a tipped one, you may need to also remove the plastic rail on the inside (front) of it. The rail is meant to keep the follower from tilting when it is empty. The rail is helpful in this case if you don't need to remove it, but it's not necessary to operate properly, or so it seems.

Hexmag:
Follower for 450 Bush master, 458 S O C O M, 50 Beo-wolf. Condition is New. Shipped with USPS First Class Package
All listed items are intended for bolt action weapons.

These are produced as they are ordered please allow up to 1-3 business days for processing.