I have fired both a '28 and M1 and have a Grease Gun and if you think the '28 has a slow rate of fire wait till you cut the ROF by a third (down to 400) then you will have a slow firing gun !! I took my Grease Gun to the range (outdoor and not supervised) and used one hand, swung the gun up and down range and fired the whole 30rds!! I had no problem holding the gun up and level while holding it with one hand, But when the mag was empty it fell down to my side. I would not recommend this, but it was FUN!!!!!
