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Bushmaster 16'' 5.56 Minimalist SD 1x8 Chrome Moly w/ M16 BCG, 13.5'' AAC Squardrop Float & Micro GB

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MSRP Price: $799.99
Our Price: $339.00
You Save: $460.99 (58 %)
We currently have 13 available.
Item Number: UCT90025
Manufacturer: Bushmaster
Manufacturer Part No: 90025

The Bushmaster Minimalist SD AR-15 Upper Receiver Assembly offers many performance enhancing components with exceptional quality, perfect for upping your AR game. Built on the versatile Bushmaster modular MSR upper platform, the Minimalist SD can be used on existing MSR-type lower receivers. The Minimalist SD sports a Ferritic Nitrocarburized (FNC) treated lightweight barrel which is resistant to wear-and-tear while maintaining accuracy. The Minimalist SD receiver has a hard anodized finish which is corrosion resistant, and features an integrated brass deflector and the SquareDrop Free-Float Handguard, which provides accurate shot placement and is perfect for easily mounting accessories. The SD Upper comes factory headspaced, proofed, and test fired making it ready to use out of the box.  


  • 16" Lightweight Barrel
  • FNC Treated Barrel
  • Hard Anodized Finish
  • Integrated Brass Deflector
  • A3 Flat Top Upper
  • SquareDrop Handguard
  • AAC Flash Hider

Made In United States of America


Cartridge: 223 Rem / 5.56x45mm NATO
Finish: Anodized Black
Barrel Material: 4150 Chrome Moly Vanadium Steel
Barrel Length: 16in
Twist: 1:8 in
Threads: 1/2-28
Sights: No
Barrel Finish: Anodized Black
Barrel Contour: Lightweight
Chrome Lined: No
Gas Block Diameter: .750
Gas System: Rifle
M4 Feed Ramps: No
Upper Receiver Type: A3 Flat top
Barrel Material: 4140 Steel
Handguard: AAC 13.5'' SquareDrop Free-Float (accepts Keymod/Squaredrop accessories)
Bolt Carrier Included: Mil-Spec M16 Complete BCG
Muzzle: AAC Flash Hider

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