- Mono-core design
- Precision CNC’ed by professional machinist
- Sand blasted and anodized for maximum durability
- Comes pre-wrapped in felt
- Machined grooves on the outside for easy handling
- Comes with protective red tube for easy transport and storage.
- Weight: 4.7 oz
.177 Donny FL Koi Moderator for the S510
1.22″ x 7″… 1/2″ x 20 UNF Threads
The KOI is a great addition to any shrouded or un-shrouded air rifle. It has the smallest outer diameter compared to the other DonnyFL models but don’t let the size fool you, it’s as impressive as the others!
Shipped by USPS Ground Only!
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