The Wild Country Astro is a great lightweight carabiner, especially for the price. In our old review, the Black Diamond Oz Carabiner was similar in score to the Wild Country Astro, but in our updated review, the Oz took home our Top Pick award, thanks mostly in part to its new wire notch hood that keeps the nose from snagging. If you aren't in need of a snag-free carabiner, the Astro is still a good choice, but not quite as affordable as the Mad Rock biner. For thos who want to go truly ultralight, get the CAMP Nano 22 Carabiner. It didn't score as high as the Astro because it harder to handle. That said, you do notice the weight difference. If you have the money, get the Wild Country Helium Carabiner, which is not that much heavier and scored higher.
Wild Country Astro Review
Cons: Gets hung up when cleaning on steep routes, doesn't hold a lot of knots and slings
Manufacturer: Wild Country
Our Analysis and Test Results
This biner is a tweener: right between being mega ultralight and big and comfy. It's a nice balance if you value easy handling but still want to go light. The Spine is particularly featured and easy to grab.
The biner can get caught on bolt hangers when removing. This was a giant deal but means this is not the best sport climbing biner. Also, this biner does not hold a lot of knots at belay - it's just not that big.
This is a great workhorse trad climbing carabiner.
If you like the Wild Country Astro, but want a product that is easier to handle and lighter for the same price, consider the CAMP Photon Wire Straight Gate. As mentioned above, the Mad Rock UltraLight also gives you a lot of bang for your buck!
— Chris McNamara and Chris Summit