The most important item in every archer OSRS gold equipment is his backpacking companion, Ava's Device. This device automatically takes ammunition from the ground for you. If you plan on getting to a higher level Ranged proficiency and are planning to use expensive ammunition this is must have.
Ava's Devices have best bonuses to ranged skills from all slots in the cape, they help you save money as well as time through automatic pickups, and they can also bring in random junk into your inventory. This item can be obtained when you complete the Animal Magnetism quest which requires the completion of Priest In Peril, Ernest the Chicken and Restless Ghost quests. Additionally, you'll need levels 18 Slayer and 19 Crafting. You will also need 30 Ranged and 35 Woodcutting. There are three kinds of tools available.
Avas Attractor - If are not at the level of 50 in your Ranged ability, you'll be awarded this item as a reward from the quest. This piece of equipment automatically collects 60% in your ammunition. About 20% breaks (which is the norm for all types of ammunition) and 20 percent is left at the bottom. It provides also +2 bonus to your accuracy when you shoot.
Avas Accumulator level 50 , if already have an old school runescape gold Attractor, you can visit Ava to upgrade the Attractor by giving her 75 steel arrows and 1000 gold. However, if you've achieved this feat after having reached 50 Ranged, you'll be able to get this upgrade right away, with no other payments. This upgraded version can increase the rates of ammunition pickup from 60% to 72%. The upgraded backpack also comes with +4 Magic Defence and +4 bonus to the Ranged Accuracy rating.