Rock River Arms .450 Bushmaster Mid A4 SS Upper

Upper Rock River Arms UPC 842834124138

Rock River Arms .450 Bushmaster Mid A4 SS Upper
$591.99

at Good 4 Guns · checked 32 minutes ago

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7 retailers · $631.35 to $751.99 shipped

Offers

Rock River Arms .450 Bushmaster Mid A4 SS Upper
Good 4 Guns In Stock Checked 32 minutes ago Condition: New
$591.99 + shipping in cart
History
RRA 450B0461 450 BM MID A4 UPR HALF SS UPPER
E-Commerce Arms In Stock Checked 36 minutes ago Condition: New
$631.35 $619.40 + $11.95
History
Rock River Arms AR-15 Complete Upper Receiver 450 Bushmaster 16" Stainless Barrel
MidwayUSA In Stock Checked 7 hours ago
$751.99 + free shipping
History
Rock River Arms A4 SS 16" Classic Upper .450 Bushmaster 1:24 M-LOK Mid-Length with BCG and CH, Black - 450B0461
Palmetto State Armory In Stock Checked 13 hours ago
$768.99 + shipping in cart
History
Rock River Arms LAR-15M MID A4 Complete Upper .450 BM 16" Barrel
GrabAGun Out of Stock Checked 3 hours ago
$639.99 + shipping in cart
History
Rock River Arms Completed Upper Receiver Mid-Length A4 .450 Bushmaster 16 Inch Barrel 1-24 Twist 5/8-32 Thread Free-Float Handguard Brake Black
Optics Planet Out of Stock Checked 1 day ago
$665.99 + free shipping
History
ROCK RIVER ARMS MID A4 LAR-15M Upper 450 Bushmaster 16" Heavy 5rd
Kentucky Gun Co Out of Stock Checked 13 days ago
$710.93 $696.99 + $13.94
History

Shipping estimate for one item to the lower 48 from the retailer's published policy or feed; the retailer's cart is final.

Price history

Lowest price across retailers each day.

Lowest seen
$591.99
Typical price
$619.40
Tracked since
Apr 10, 2026

Today's best price matches the 214-day low and is 4% below typical.

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