- MANUFACTURER: Ruger
- FAMILY: AR-556 Rifle Series
- MODEL: AR-556 MPR
- TYPE: Rifle
- ACTION: Semi-Auto
- CALIBER/GAUGE: 450 Bushmaster
- FINISH: Hard Coat Anodized
- FINISH TYPE: Black
- STOCK: Collapsible / Folding Stock
- STOCK/GRIPS: Six-Position Telescoping
- BARREL: 18.63″
- OVERALL LENGTH: 35.6″ – 38.9″
- RATE-OF-TWIST: 1-in-16
- CAPACITY: 5 + 1
- # OF MAGAZINES: 1
- MAG DESCRIPTION: 5 rd. Metal Box Mag
- SIGHTS: No Sights
- SIGHT TYPE: None
- THREAD PATTERN: 11/16×24
- SPECIAL FEATURE: Threaded Barrel
- WEIGHT: 7.4 lbs.
- SHIPPING WEIGHT: 9.6 lbs.
- ADDL INFO: 15″ Free Float M-LOK Handguard
- ADDL INFO: Ruger Elite 452 AR-Trigger
- ADDL INFO: Ergonomic MAGPUL Furniture
- MFG MODEL NO: 8522
- UPC: 736676085224
