Ruger
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| Trigger Pull Weight: | 4.50 lbs |
| Series: | MPR |
| Twist: | 1:16" |
| Handguards: | 15" M-LOK |
| Muzzle: | Muzzle Brake |
| Stock Description: | Magpul SL |
| Grips: | Black Magpul |
| Handguard Finish: | Black Anodized |
| Length of Pull: | 11.10"-14.40" |
| Stock Material: | Synthetic |
| Sights: | None |
| Model: | AR-556 |
| Max Capacity: | 5 |
| OAL: | 35.60"- 38.90" |
| Operating System: | Direct Impingement |
| Metal Finish Group: | Blued/Black |
| Action: | Semi-Auto |
| Caliber: | 450 Bushmaster |
| Weight: | 7.40 lbs |
| Weight Range: | 7 lbs to 7.99 lbs |
| Gun Platform: | AR-Style |
| Receiver Description: | Picatinny Rail |
| Includes: | Magazine |
| Barrel Description: | Heavy Threaded |
| Receiver Finish: | Black Hard Coat Anodized |
| Barrel Finish: | Black |
| Capacity: | 5+1 |
| Stock Finish Group: | Black |
| Barrel Length Range: | 18" to 18.99" |
| Magazine Type: | AR-15 |
| Barrel Material: | Chrome Moly Steel |
| Stock Finish: | Black |
| Trigger: | Two-Stage |
| Barrel Length: | 18.63" |
| Receiver Material: | 7075-T6 Aluminum |
| Thread Pattern: | 11/16"x24 |
| Hand: | Right Hand |