I ordered a RRA LAR-15 Coyote Rifle. I am going to use this rifle for Prairie Dogs and poking holes in paper. I will almost exclusively shoot it off of a bench. The rifle looks like it doesn't come with a lower rail on the handguard so I will probably use a stud mounted bipod like a Harris. Do any of you have any other suggestions regarding the bipod? Harris? 9"-13" with swivel feature? Any experienced thoughts would be helpful. Thanks!