.450 Upper Receiver / Bbl. Assembly |
New .450 Bushmaster Caliber. 20" or 16" w. Izzy Suppressor. Includes 4 Rd. Magazine. These uppers will mount right on your mil. spec. Lower. With a velocity of 2200 FPS, the Hornady 250 Gr. SST/FT bullet in the .450 Bushmaster "Thumper" is designed for all large North American game. Though not a long distance cartridge, accuracy has proved to be exceptional out to 200 yards with felt recoil similar to a 20 ga. shotgun. Tubular aluminum forends allow the barrel to free float from the nut forward, chrome lining in both bore and chamber makes for long barrel life and easy cleaning.
Options: 20" Barrel or 16" Barrel
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11.5" A2 Upper Receiver/Barrel Assembly |
An ideal package for the Law Enforcement professional, its compact size offers easy handling in close quarters and squad cars. This assembly's short barrel length requires that these uppers be used on full automatics, or registered short barreled rifles or pistols. The A2 "Birdcage" Suppressor is standard with this assembly, but other flash suppressors are also available as factory installed options.
NOTE: This Upper Receiver/Barrel Assembly is legal for installation only on weapons registered as Short Barreled Rifles or Pistols.
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11.5" Upper Rec. / Bbl. Assembly with 5.5" Flash Suppressor |
Our 5.5" CAR 15 Extended Flash Suppressor is pinned onto this 11.5" barrel, and welded to meet 16" total barrel length requirements.
Options: A2 or A3 Upper, A3 Upper with no Carry Handle
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11.5" Upper Rec. / Bbl. Assembly with 5.5" Flash Suppressor - No Bolt |
Our 5.5" CAR 15 Extended Flash Suppressor is pinned onto this 11.5" barrel, and welded to meet 16" total barrel length requirements.
Options: A2 or A3 Upperm A3 Upper with No Carry Handle
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11.5" Upper Receiver/Barrel Assembly 1x7 Twist |
An ideal package for the Law Enforcement professional, its compact
size offers easy handling in close quarters and squad cars. This assembly's
short barrel length requires that these uppers be used on full automatics, or
registered short barreled rifles or pistols. Configurations with the A3
"flat-top" upper receiver are also available at no extra cost. The A2 "Birdcage"
Suppressor is standard with this assembly, but other flash suppressors are also
available as factory installed options.
NOTE: This Upper Receiver/Barrel Assembly is legal for installation
only on weapons registered as Short Barreled Rifles or
Pistols.
Options: A2 w/Lug or A2 w/o Lug, A3 w/Lug or A3 w/o Lug
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14.5" .223 Caliber Upper Receiver / Barrel Assembly |
Bushmaster .223/5.56mm caliber 14.5" Chrome Lined M4 Profile Barrels with permanent Izzy Flash Suppressor. Total barrel length just over 16in makes this a BATF legal assembly.
1X9 Twist, A2 Front Sight, Flat-Top, A3 Carry Handle
Options: A3 or A2
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14.5" .223 Caliber Upper Receiver / Barrel Assembly - No Bolt |
14.5" Chrome Lined M4 Profile Barrels with permanent Izzy Flash Suppressor. Total barrel length just over 16in makes this a BATF legal assembly.
Less Bolt, Carrier and Charging Handle.
Options: A3 or A2
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14.5" Bbl. M4 Type Upper Receiver/Barrel Assembly |
One of our most popular Law Enforcement configurations, this light weight, chrome lined 14.5" barrel assembly has the "cutout" profile designed to mount the M203 Grenade Launcher.
Options: A2 or A3 Upper
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14.5" Heavy Barrel Upper Receiver / Bbl. Assembly |
This lightweight carbine upper can be ordered with either the A2 Upper Receiver or the A3 "flat-top" style Upper.The 14.5" barrel length makes this Upper legal for use only on weapons registered as pistols, short-barreled rifles or full-automatic rifles. The chrome lined barrel is heavy profile in its full length, and the A2 birdcage suppressor is standard. Other flash suppressors / muzzle brakes are available as optional installations, and if permanently attached, and long enough to create a 16" overall barrel unit, this assembly would become legal for use on semi-automatic lowers.
Options: A2 or A3 Upper
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14.5" Heavy Barrel Upper Receiver / Bbl. Assembly No Bolt |
This lightweight carbine upper can be ordered with either the A2 Upper Receiver or the A3 "flat-top" style Upper.The 14.5" barrel length makes this Upper legal for use only on weapons registered as pistols, short-barreled rifles or full-automatic rifles. The chrome lined barrel is heavy profile in its full length, and the A2 birdcage suppressor is standard. Other flash suppressors / muzzle brakes are available as optional installations, and if permanently attached, and long enough to create a 16" overall barrel unit, this assembly would become legal for use on semi-automatic lowers.
Options: A2 or A3 Upper
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16" Dissipator Upper Receiver/Barrel Assembly |
In the unique Dissipator, gas block placement is under the rifle length handguards to offer reliable cycling, the accuaracy of the full sight radius, and cool operation.
Options: A2 w/Lug or A2 w/o Lug
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16" Dissipator upper Receiver/Barrel Assembly - No Bolt |
In the unique Dissipator, gas block placement is under the rifle length handguards to offer reliable cycling, the accuaracy of the full sight radius, and cool operation.
Options: A2, A3 or A3 with no Carry Handle
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16" Heavy Carbine Upper Receiver/Barrel Assembly |
Bushmaster's 16" chrome lined, heavy carbine barrels - headspaced, test fired, and ready for use - include short carbine handguards.
Options: A2, A3 or A3 with no Carry Handle
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16" Heavy Carbine Upper Receiver/Barrel Assembly No Bolt |
Bushmaster's 16" chrome lined, heavy carbine barrels - headspaced, test fired, and ready for use - include short carbine handguards.
Options: A2, A3 or A3 with no Carry Handle
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16in Carbine M4 Type Upper Receiver. |
One of our most popular configurations, this light weight, chrome lined 16" barrel assembly has the "cutout" profile designed to mount the M203 Grenade Launcher. The A2 configuration is shown - see Options for ordering A3 versions (flat-top receiver)
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16in Dissipator A3 Upper Receiver/Barrel Assembly |
In the unique Dissipator, gas block placement is under the rifle length handguards to offer reliable cycling, the accuaracy of the full sight radius, and cool operation.
Options: A3 with or no Carry Handle, Bayonet Lug, w/o Bayonet Lug
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16in PostBan Carbine M4 Type Upper Receiver/Barrel Assembly |
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20" Flat Top National Target Match |
Rifled 1 turn in 9", these heavy profile, hard chrome lined barrels deliver Bushmaster accuracy for match competitors worldwide. The A3 Upper Receiver is complete (headspaced, test fired, and ready to snap onto your lower receiver) with charging handle, forward assist, ejection port cover, bolt, bolt carrier assembly and handguards
Options: A3 w/Lug or A3 w/o Lug
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20" Flat Top National Target Match No Bolt |
Rifled 1 turn in 9", these heavy profile, hard chrome lined barrels deliver Bushmaster accuracy for match competitors worldwide. The A2 Upper Receiver is complete (headspaced, test fired, and ready to snap onto your lower receiver) with dual aperture rear sight, charging handle, forward assist, ejection port cover, bolt, bolt carrier assembly and handguards
Options: A3 w/Lug or A3 w/o Lug
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20" National Match Target Model Upper Receiver/Barrel Assembly |
Rifled 1 turn in 9", these heavy profile, hard chrome lined barrels deliver Bushmaster accuracy for match competitors worldwide. The A2 Upper Receiver is complete (headspaced, test fired, and ready to snap onto your lower receiver) with dual aperture rear sight, charging handle, forward assist, ejection port cover, bolt, bolt carrier assembly and handguards.
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Options: 20" A2 w/Lug or 20" A2 w/o Lug, 24" A2 w/Lug or 24" A2 w/o Lug, 24" A3 w/Lug or 24" A3 w/o Lug
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20" Predator Upper Receiver/Barrel Assembly |
Adapted from our very accurate and successful 24" Varminter, the Predator Upper Receiver/Barrel Assembly's 20" Fluted Extra Heavy Barrel is button rifled 1 x 8" to stabilize the heavier 69-77 grain bullets that a predator hunter/caller would choose for bigger varmints and predators. This superb barrel features fluting for increased cooling and weight reduction; an 11 degree competition crown; 1" diameter heavy profile under the handguard; custom match hybrid chamber with a tighter SAAMI Spec headspace from the shoulder of the chamber to the bolt face, and longer chamber throat or "Leade". This chamber accommodates 5.56mm ammunition without developing higher pressures encountered when firing 5.56mm ammo in a .223 chamber with shorter "Leade" (both calibers can be used safely). This Upper is sold complete with Bolt, Bolt Carrier and Charging Handle to ensure positive lockup between bolt and barrel extension. The Predator Upper also features a Vented Tubular Aluminum Free-Floater Forend with Bipod Stud (free-floats the barrel from the barrel nut forward) and B.M.A.S. 1/2" Mini-Risers to add scope height for correct sight picture and comfortable cheek weld.
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24" Varminter Upper Receiver/Barrel Assembly |
This Assembly - from our very accurate Varminter - features a 24" Fluted Extra Heavy Barrel in 5.56mm/.223 Rem. caliber with 11 degree competition crown; heavyweight 1" diameter under the handguard; custom match hybrid chamber with a tighter SAAMI Spec headspace from the shoulder of the chamber to the bolt face, and longer chamber throat or "Leade". This accommodates 5.56mm ammunition without developing higher pressures encountered when firing 5.56mm ammo in a .223 chamber with shorter "Leade" (both calibers can be used safely). Rifling is 1 in 9" twist for optimum performance with most lighter bullet weight varmint cartridges, and the barrel is fluted to increase cooling and reduce weight. The Varminter Upper's shell ejection path has been modified to drop all your brass in the same place as a convenience for the reloader. A vented forend with bipod/sling stud installed, free-floats the barrel from the barrel nut forward and B.M.A.S. Mini-Risers add 1/2" to scope height for correct sight picture and comfortable cheek weld. This Upper is sold complete with Bolt, Bolt Carrier and Charging Handle to ensure positive lockup between bolt and barrel extension.
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6.8mm SPC Upper Receiver |
6.8mm SPC Caliber * 16" M4 Profile Barrel * with 26 Round 6.8mm Magazine Mount a "Bushmaster of a higher caliber" on your existing Lower! The .270 cal. 6.8mm SPC (Special Purpose Cartridge) was developed for the military, but is now available commercially. Velocity averages a bit over 2600 FPS (with Hornady 115 Gr. V-Max), and the heavier bullet weights deliver a terminal energy capable of bringing down larger game. Complete 6.8mm SPC Barreled Upper Receiver Assemblies include one 26 Round Magazine.
Options:
A3 with Removable Carry Handle
A3 Less Carry Handle (Flat Top)
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A2 Stainless Steel-Barreled Upper Receiver/Barrel Assemblies |
These Bushmaster Stainless Steel Barrels are machined to our strictest standards.
We've had many requests to build Bushmaster accuracy in Stainless Steel configurations - just snap this complete assembly on your lower receiver and you're ready for the high power range. Assemblies are complete with Bushmaster forged Upper Receivers with Match Grade Polished Stainless Steel Barrels (1 in 9" right hand twist, button rifled).
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A3 11.5" Upper Rec. / Bbl. Assembly with 5.5" Flash Suppressor |
Our 5.5" CAR 15 Extended Flash Suppressor is pinned onto this 11.5" barrel, and welded to meet 16" total barrel length requirements.
Note: The twist is 1x7 only
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Carbon 15 Flat-top Upper Reciever |
Features an aluminum Picatinny Rail on a Carbon 15 Composite Upper; 5.56mm/.223 Rem. Caliber 16in M4 profile Chrome Lined Barrel with Izzy Compensator; Standard A2 Front Sight with square post (elevation adjustable); and carbine length handguards. This assembly is complete with Bolt, Carrier and Charging Handle.
Options: Carbon Flattop, Flattop Less, Model 4, Model 4 Less
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Modular Carbine Upper Receiver/Barrel Assembly |
This is highly accessorized Upper Receiver/Barrel Assembly from our 16" Modular Carbine features a 16" Chrome Lined Chrome Moly Steel Fluted Barrel with Milled Gas Block. A Four Rail Free-Floater Tubular Forend combines with the A3 type "Flat-top" Upper Receiver to provide all the Picatinny rails necessary for mounting sights, scopes or accessories. Molded Rubber Sure Grip Rail Covers snap over the rail sections to add comfort and protection against heat buildup. The B.M.A.S. Rear Flip-up Sight is a dual aperture detachable unit with windage knob calibrated to 1/2 Minute of Adjustment. The B.M.A.S. Front Flip-up Sight clamps around the milled front gas block and incorporates an elevation adjustable front sight post - all ready for your lower receiver.
Options: Modular Carbine, Modular Carbine w/o Bayonet Lug
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Stainless Steel-Barreled Upper Receiver/Barrel Assemblies |
These Bushmaster Stainless Steel Barrels are machined to our strictest standards.
We’ve had many requests to build Bushmaster accuracy in Stainless Steel configurations - just snap this complete assembly on your lower receiver and you're ready for the high power range. Assemblies are complete with Bushmaster forged Upper Receivers with Match Grade Polished Stainless Steel Barrels (1 in 9" right hand twist, button rifled).
20" A2 Fixed Carry Handle Stainless Steel Bbl. Target Model Upper Receiver/Barrel Assembly
(BURA2B 20SS) - with bayonet lug, A2 flash suppressor
(PURA2B 20SS) - with crowned muzzle/no lug
20" A3 Removable Carry Handle Staniless Steel Bbl. Target Model Upper Receiver Assembly
(BURA3B 20SS) with bayonet lug, A2 fash suppressor
(PURA3B 20SS) - with crowned muzzle/no lug
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Upper with Removable Carry Handle |
One of our most popular configurations, this light weight, chrome lined 16” barrel assembly has the “cutout” profile designed to mount the M203 Grenade Launcher. The A3 configuration is shown - see Options for ordering A2 versions (flat-top receiver)
Options: A2, A3 or A3 with no Carry Handle
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Upper with Solid Fixed Carry Handle |
One of our most popular configurations, this light weight, chrome lined 16" barrel assembly has the “cutout” profile designed to mount the M203 Grenade Launcher. The A3 configuration is shown - see Options for ordering A2 versions (flat-top receiver)
Options: A2, A3 or A3 with no Carry Handle
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Upper with Solid Fixed Carry Handle - No Bolt |
One of our most popular configurations, this light weight, chrome lined 16" barrel assembly has the “cutout” profile designed to mount the M203 Grenade Launcher.
Options: A2, A3 or A3 with no Carry Handle
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V Match Upper Receiver/Barrel Assembly |
These assemblies are defined by the "flat-top" Upper Receiver and a hard anodized, tubular, aluminum free-floater forend to offer accuracy and sight mounting versatility. Specify full or "milled" front sight base (milled shown), and threaded or crowned muzzle. Includes bayo. lug, threaded muzzle, A2 flash suppressor.
Options: 16", 20" or 24" Barrel, with or without Bolt, Carrier and Charging Handle
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V Match Upper Receiver/Barrel Assembly Less Bolt, Bolt Carrier Assembly and Charging Handle |
These assemblies are defined by the flat-top Upper Receiver and a hard anodized, tubular, aluminum free-floater forend to offer accuracy and sight mounting versatility. Specify full or milled front sight base (milled shown), and threaded or crowned muzzle. Includes bayo. lug, threaded muzzle, A2 flash suppressor. Does not include: Bolt, Bolt Carrier Assembly and Charging Handle.
Options:
20" or 24" Barrels, With and Without Bayonet Lug or 20" Barrel Less Bolt With or Without Lug
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Varminter Special Upper Receiver/Stainless Steel Barrel Assembly |
This assembly features a brush finished 24" Barrel machined of 416 Stainless Steel (button rifled 1 in 9") as used on our Stainless Varmint Special Rifle. It includes a Free-floater Vented Tubular Forend with Bipod / Sling Stud installed, 1/2" B.M.A.S. Mini-Risers - with Bolt, Carrier, and Charging Handle - all ready for your lower.
Options: Same Assembly without Bolt, Bolt Carrier Assembly
and Charging Handle
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