Will this fit?

[Coopdigs]

Can the black aces quad picatinny rail system for the 870 12 gauge be modified to fit the 870 20 gauge? If not is there one made for the 20 gauge that wraps around the extended feed tube as well as barrel? Thanks

[Coopdigs]

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Like this one

Screenshot_20210424-075320_Facebook.jpg (313.75 KiB) Viewed 2017 times

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[Scorpion8]

The receiver-end will probably fit as the 12 & 20 receivers are the same size. The barrel end? Well a crafty folk could line those shell holders to downsize them to snug up on a 20-ga shell. Frankly the HD market is built around the 12-ga shell. While a 20-ga can be put to good use, the aftermarket is built on the 12-ga.