Centurion Arms CM4 AR-15 Pistol 5.56 NATO — VLTOR MUR Upper, Daniel Defense RIS II FDE, SOLGW BCG, Black River Tactical CHF Barrel
This Centurion Arms CM4 AR pistol brings together a CM4-marked lower and a VLTOR MUR upper with a proven set of premium components. It features a Daniel Defense RIS II FDE free-float quad rail, a Radian Raptor ambidextrous charging handle, a Sons of Liberty Gun Works bolt carrier group, and a Black River Tactical cold hammer-forged barrel. The firearm is in excellent condition with a clean, mirror-finish bore.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal signs of prior handling. The bore is bright and shiny throughout.
What’s Included
- 1x 30-round Mission First Tactical (MFT) polymer STANAG-pattern magazine
- Daniel Defense RIS II quad rail handguard (FDE, installed)
- Radian Raptor ambidextrous charging handle (installed)
- SB Tactical arm brace with hook-and-loop strap (installed)
- Magpul B.A.D. Lever on bolt catch (installed)
- VLTOR MUR upper receiver with forward assist (installed)
- A2-style flash hider (installed)
The foundation is a Centurion Arms CM4 lower receiver marked with the bayonet logo, CAL. MULTI, and CENTURION MORGANTOWN, WV. It runs a direct-impingement AR-15 gas system and feeds from STANAG-pattern magazines for a 30+1 capacity. The receiver set uses 7075-T6 aluminum with a Type III hardcoat anodized finish and is made in the United States.
Up top is the VLTOR MUR upper receiver with forward assist, paired with a Daniel Defense RIS II FDE free-float quad rail. The RIS II is built from 6061-T6 aluminum and includes a T-marked top rail with FRONT marking, providing continuous Picatinny rail space along all four sides.
The barrel is a Black River Tactical cold hammer-forged unit. Build details note it as 13.9 inches; there is no confirmed pin/weld information. The barrel is threaded and currently fitted with an A2-style flash hider.
Controls and internals are well appointed: a Radian Raptor ambidextrous charging handle, a Magpul B.A.D. Lever on the bolt catch, and a Sons of Liberty Gun Works bolt carrier group. An SB Tactical arm brace is installed on a smooth, round pistol buffer tube (receiver extension) and is the fixed, non-adjustable model clamped to the tube, providing a secure strap interface.
The firearm’s excellent overall condition is matched by a clean, mirror-finish bore and sharp rifling. It ships with a Mission First Tactical 30-round polymer magazine.