Ruger American Rifle Generation II Standard 450 Bushmaster 20'' 3-Rd Rifle

Description

The Ruger American Rifle Generation II Standard Model 46905 is a .450 Bushmaster bolt-action rifle designed around Ruger’s updated Gen II American platform. This configuration pairs a 20-inch cold hammer-forged non-fluted barrel with a 3-round single-stack magazine, Gray Splatter adjustable stock, Gun Metal Gray Cerakote finish, factory radial-port muzzle brake, Marksman Adjustable trigger, three-position tang safety, Power Bedding system, and factory-installed Picatinny scope base. Ruger identifies this exact configuration as Model 46905 / UPC 736676469055.

Chambered in .450 Bushmaster, Model 46905 uses a 20-inch non-fluted barrel with a 1:16" right-hand twist and five grooves. Unlike many other Gen II Standard models that feature spiral-fluted barrels, Ruger specifically lists the 46905 barrel as non-fluted.

The muzzle is threaded 11/16"-24 and comes from the factory with a radial-port muzzle brake. Ruger cold hammer forges the barrel for precise rifling and longevity. The barrel, muzzle brake, receiver, and bolt handle receive a professionally applied Gun Metal Gray Cerakote finish for durability and easier maintenance.

Model 46905 feeds from a 3-round single-stack detachable magazine, with one magazine included. This magazine configuration is an important catalog distinction from the AR-style, AI-style, and flush-fit magazines used by other American Gen II chamberings.

The rifle uses Ruger’s Gray Splatter Gen II American stock, which provides additional gripping texture without being excessively sharp or abrasive. A soft rubber recoil pad incorporates progressively collapsing geometry to help reduce felt recoil—particularly useful with the .450 Bushmaster chambering.

Stock fit is adjustable between 12" and 13.75" length of pull. Removing the installed spacer reduces the LOP from 13.75" to 12", while additional spacers are available for further adjustment. Ruger also installs a removable low comb intended to improve sight alignment with magnified optics.

The American Gen II incorporates the Ruger Marksman Adjustable™ trigger, offering a user-adjustable pull weight between 3 and 5 pounds. Ruger’s patented Power Bedding™ integral bedding block system positively locates the receiver while free-floating the barrel.

A three-position tang safety can lock the bolt to help prevent inadvertent opening while still allowing the rifle to be loaded with the safety engaged. The one-piece bolt is CNC-machined from stainless steel and uses Ruger’s three-lug design with a 70-degree bolt throw for ample scope clearance. An oversized bolt handle uses a 5/16"-24 thread pattern for easy replacement.

Traditional iron sights are omitted. Instead, Ruger equips Model 46905 with a factory-installed one-piece Picatinny scope base. At 6.4 pounds and 41.25 inches overall, the rifle provides .450 Bushmaster capability in a relatively lightweight hunting platform. Ruger currently lists Model 46905 as Available with a suggested retail price of $769.00.