Area 419 Magazine Extension ARCA These also work great as

These also work great as a rear bag as well

What it will give you is a rock solid platform in which to shoot off of any improvised objects as well as being about the best prone bag that I have ever shot with

AX 10 Round Double Stack (6677)

330" of space on the scope either in front

Also works well for Picatinny rail conversions with this part here

Area 419 Magazine Extension ARCA These also work great asArea 419's opinion these are the only correctly made mag extensions on the market. Other magazine extensions on the market are simply rectangular blocks. If you look at your magazine the bottom is angled so when you attach a competitors extension, it is not parallel with the column of cartridges in the magazine. This probably works fine for +2 rounds, but it would not work for much if any more. They decided to do it right, and cut the attachment rail