5.56 NATO 77gr OTM match-grade ammunition
Sphere R&D 5.56 NATO ammunition pairs a 77-grain open tip match (OTM) bullet with in-house manufacturing and a focus on consistent performance.
Product specifications
- Caliber: 5.56 NATO
- Bullet weight: 77 grains
- Bullet type: Open tip match (OTM)
- Product line: Match grade
- Manufacturer: Sphere Research & Development
- SKU: SRD556MG
Manufactured in-house
Sphere R&D is based in Von Ormy, Texas. Learn about Sphere R&D and our approach to ammunition manufacturing.
Explore our 9mm 124gr FMJ match-grade ammunition for the pistol side of the lineup, or contact our team with product and ordering questions.