Velocity Systems Triple 5.56 Magazine Insert: Setup and Use
By Blaze Defense Systems | Tactical Gear: Breaching Tools, QR Kits, Medical, Fire Suppression | Published: 2026-10-31
Category: How-to Guides
Learn how to install and set up the Velocity Systems Triple 5.56 Magazine Insert in a plate carrier or chest rig, with retention checks and placement tips.
Quick answer
Install the Triple 5.56 Magazine Insert by seating it fully into a compatible kangaroo pouch or cummerbund pocket, then adjust the shock cord so magazines stay secure during movement but release cleanly. Always test retention with a loaded magazine before relying on it.
Why placement and retention matter more than the insert itself
The insert is a passive holder: it does not add retention beyond the shock cord and the surrounding pouch. Where you place it determines whether you can reach the magazines without shifting your carrier, and how you tension the cord determines whether they stay put or come out too easily. A common mistake is to set retention once at home and never recheck it after adding or removing gear from the carrier.
When this insert is not the right choice
This insert is sized for 5.56 magazines and similar-sized magazines, and it relies on a compatible pouch or pocket to hold it. If your carrier does not have a kangaroo pouch, an appropriate cummerbund pocket, or a placard that accepts inserts, you will need a different mounting solution. Also, if you need to carry magazines of a noticeably different size or shape, check that they fit before committing to this insert.
Step-by-step setup
- Identify the mounting location: Check your carrier or chest rig for a compatible kangaroo pouch, a CBN3 Cummerbund pocket, or a placard that accepts inserts. If you are using a cummerbund, confirm it has soft armor pockets as specified for this insert. If you cannot find a compatible pocket, stop and consider a different insert or pouch.
- Insert the magazine insert: Slide the insert fully into the pouch or pocket so the top edge sits below the pouch opening. Make sure it lies flat and does not bunch at the bottom. A partially seated insert can shift and cause inconsistent magazine retention.
- Adjust the shock cord: Loosen the shock cord before loading magazines. Then load three 5.56 magazines and tighten the cord until they are held firmly but can still be pulled out with a deliberate tug. Test with a fully loaded magazine; empty magazines give a false sense of retention.
- Perform a retention check: With the carrier on, jump, squat, and reach across your body. The magazines should not move or fall out. If they do, tighten the cord slightly and retest. Recheck retention after adding or removing other gear from your carrier.
- Practice magazine access: Draw each magazine several times with your support hand. The insert should release the magazine smoothly without dragging the pouch. Adjust cord tension if you feel resistance. If access is awkward, try moving the insert to a different compatible pouch before changing the cord tension.
Product facts
- Velocity Systems Triple 5.56 Magazine Insert: Designed for the kangaroo pouch of SCARAB LT, LEPC, APC, LPAC, MCCR, MCP, or as an insert into the CBN3 Cummerbund with soft armor pockets. Knowing the compatible carriers helps you choose the right mounting point and avoid a loose fit.
Velocity Systems Triple 5.56 Magazine Insert - Velocity Systems Triple 5.56 Magazine Insert: Holds 5.56 magazines or similar-sized magazines with an adjustable shock cord. The shock cord lets you tune how firmly magazines are held, which you can adjust for different activities.
