The M870 is not a very field worth gun, it's OK for CQB but outdoors not worth it. There is a high maintance to it.
I have one and have been running it on Green gas. Loads with 5-6 .12 bb's and fires in a spread, effective to 15 feet. While the M870 is a fun gun, running shells is a pain in the ass, the small number of shells you can carry it's a tough gun to use VS Aegs with highcaps (Even indoors)
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