Flat RiverArms Retro AR-15 Model XM16E1 5.56 Rifle. This is a retro version of the first AR15 issued to the US Army in 1965. The M16A1 was later introduced in 1967. A1 pistol grip, handguard, Chrome, Duckbill 3 Prong Flash Hider, A1 rear sight, Chrome bolt carrier group with serrations.
This 20″ Pencil barrel. It features a front sight tower for easy targeting and enhanced accuracy and longevity. The 5.56mm, 1:7 twist rate.
Specifications:
- Length: 20″
- Barrel Twist: 1-7
- Caliber: 5.56mm
- Material: 4150 CMV
- Finish: Mag Phosphate
- .625 at the journal
- Non F marked front sight
- M4 feed ramps