I read about this in the comments for this deal:
https://gun.deals/product/ar500-armor-pre-order-ar-freeman-plate-carrier-w-armor-89

Step 1)
Pick out the targets, armor, carrier package or whatever else you want, add it to your cart and use coupon code "twangnbang". This coupon code doesn't work for all items, but it works for many of the carrier and armor packages along with the accessories. Pick out everything you want to buy and note the total with shipping and the coupon code applied. Shipping isn't discounted with this coupon code, but some items do have free shipping.

Step 2)
Digital gift cards are 25% off, and the coupon code "twangnbang" can be stacked for an addition 10% off after, total is 32.5% off at this point. Buy a gift card for the amount you totaled in step 1. Buy this with one email address. Digital gift card link:
https://www.ar500armor.com/ar500-gift-card.html

Step 3)
Get everything back into your cart from step 1, add the coupon code, checkout. You'll want to use a different email address than you used in step 2 to purchase the gift card. There will be a spot to enter the gift card number during checkout and that's it!

Example:
Let's say your total was $500 and $25 shipping total $525, 10% off makes it $450 and $25 is $475. Buy a gift card for the amount $475, it will show up in your cart for $356.25. Add the coupon code and it will drop to $320.63. Your $525 original order was just purchased for $320.63, almost 40% off.