If you are referring to The Gamo-1000 air Rifle with supressor,think a little 1st.Why would you need a supressor on an air Rifle?I would think the need for every bit of propulsion you could get,would be the standard for ANY airgun.Anytime a supressor/silencer is used on any firarm,The Muzzle velocity is readily/extremely affected.Gamo advertises 1200 fps for those air Rifles in .177 caliber,I seriously doubt their claim at least outside of a Lab.If you want silent,Get a Crossbow,they will teach the untrained eye to a simple but very effective form of ballistics,You can later use that judgement for just about anything,You are likely to hunt!Your 1st choice for the Rem.870 is a Very Good choice!Don't waste your $$$ on a Brazillian BB gun for choice #2!