Model
| AR15 Ultramatch STS 20" |
Action | Semi-auto direct impingemen |
Ammunition | .223 Rem. |
Weight | 8,8 pounds |
Length | 38,2" |
Barrel | 20", stainless steel, fluted bull-barrel profile, blued |
Chamber | .223 Rem./ 5.56 NATO |
Twist rate
| 1/8 button rifled |
Muzzle device
| - |
Bolt carrier
| semi-auto with a manganese phosphate coating |
Upper receiver
| Forged mil-spec 7075 T6 aluminum with picatinny rail on top, tribological hard coat anodizing |
Charching handle
| Ambidextrous, Steel/ 6082 Aluminium |
Handguard | Free-Floated, 15,3" length. “Slim-Line” profile, incl. picatinny Rail on top. With steel thread inserts (HELICOIL®), 3-side Key-Mod locks, hard coat anodizing |
Front and rear Sight
| - |
Lower receiver
| Forged mil-spec 7075 T6 aluminum, tribological hard coat anodizing |
Buttstock | A4 Buttstock |
Buffer | Standard A4 buffer and spring |
Trigger | Two-Stage trigger with a 5,3 pound (3,3/2 pound) trigger pull |
Safety selector
| Ambidextrous wing safety |
Grip | Formed plastic grip |
Magazine | 10-rd |