Ruger's AR-556 MPR is made from 7075-T6 hard-coat anodized aluminum forgings, shot-peened and proof-tested 9310 steel bolt and 8620 steel bolt carrier. It features a Magpul MOE grip and MOE SL collapsible buttstock on a Mil-Spec buffer tube; a 15" handguard that uses Magpul M-LOK accessory attachment slots along the 3:00, 6:00 and 9:00 positions with additional slots on the angled faces near the muzzle; The Ruger Elite 452 AR-Trigger is a two-stage trigger that offers a smooth, crisp, 4.5 pound trigger pull; a full-strength hammer spring for consistent primer ignition and a lightweight hammer that enables a faster lock time for improved accuracy; threaded, cold hammer-forged 4140 chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy, longevity and easy cleaning. Includes one 5rd metal magazine.
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| Handguards: | 15" M-LOK |
| Trigger Pull Weight: | 4.50 lbs |
| Series: | MPR |
| Twist: | 1:16" |
| Length of Pull: | 11.10"-14.40" |
| Stock Material: | Synthetic |
| Safety: | Thumb |
| Grips: | Black Magpul |
| Muzzle: | Muzzle Brake |
| Stock Description: | Magpul SL |
| Model: | AR-556 |
| Max Capacity: | 5 |
| Operating System: | Direct Impingement |
| OAL: | 33.38"- 36.63" |
| Sights: | None |
| Caliber: | 350 Legend |
| Metal Finish Group: | Blued/Black |
| Action: | Semi-Auto |
| Receiver Finish: | Black Hard Coat Anodized |
| Barrel Description: | Threaded |
| Weight Range: | 6 lbs to 6.99 lbs |
| Weight: | 6.60 lbs |
| Includes: | Magazine |
| Receiver Description: | Picatinny Rail |
| Gun Platform: | AR-Style |
| Barrel Length Range: | 16" to 16.99" |
| Stock Finish Group: | Black |
| Stock Finish: | Black |
| Barrel Material: | Chrome Moly Steel |
| Magazine Type: | AR-15 |
| Barrel Finish: | Matte Black Nitride |
| Capacity: | 5+1 |
| Receiver Material: | Aluminum |
| Barrel Length: | 16.38" |
| Trigger: | Two-Stage |
| Hand: | Right Hand |
| Grooves: | 5 |
| Thread Pattern: | 1/2"x28x0.4 |
