AR-15 Uppers

.50 Beowulf® | AR-15 Uppers
All .50 Beowulf® upper receiver assemblies are fully-complete, function-tested, and ready to fire. All available products and options are visible in the Online Store. We do not produce custom weapons.

The .50 Beowulf® was designed to not have an ejection port cover. Clearly, the port is much larger than a typical AR-15, so no, you cannot retrofit one. Trust us, you don't need it. As an addendum, the hinge points are left on the receiver because the upper receiver would cost more to manufacture by removing them from the design. They are not left specifically so that port doors can be retrofitted to the upper and we do not encourage this retrofitting.
Flat-top receiver, 16.5" chrome moly barrel, 1:20 twist rate, standard A2-type two-piece handguard, and standard Picatinny railed gas block. Direct impingement operating system. Ships with one 7-round magazine. This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required). Weight of upper is 4.45 lbs.
$719.25
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Flat-top receiver, 16.5" chrome moly barrel, 1:20 twist rate, and low-profile gas block with Manticore Arms Transformer Rail handguard. Direct impingement operating system. Barrel threaded 49/64-20. Ships with one 7-round magazine. This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required). Weight of upper is 4.45 lbs.

Upper is shown with an FDE Cerakote finish, with FRAG grip panels and KeyMod panels, threaded barrel and the Tank Muzzle Brake. These are all available as upgrade options below.
$1,190.00
Flat-top receiver, 16.5" button-rifled, chrome moly barrel, 1:20 twist rate, and G10 composite free-floating rifle-length handguard. Direct impingement operating system. 49/64-20 muzzle threading (non-optional). One MK10 3-inch Picatinny rail section is included and installed on the top position of the handguard and one sling swivel stud is installed on the bottom side of the handguard. It is possible to install four MK10 rail sections onto the handguard at the muzzle end in the positions of 3-, 6-, 9-, and 12-o'clock. The upper receiver assembly is produced in standard, durable Kryptek® Highlander camouflage (non-optional) and includes one 7-round magazine. This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required).

Product displayed is shown with OPTIONAL thread protector.
$1,190.00
Flat top receiver, 16.5" chrome moly barrel, 1:20 twist rate, G10 composite free-floating handguard, and a low-profile gas block. Direct impingement operating system. Ships with one 7-round magazine. This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required). Weight of upper is 4.25 lbs.
$787.50
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Flat top receiver, 16.5" chrome moly barrel, 1:20 twist rate, Picatinny rail gas block, detachable front sight and rear carry handle. Direct impingement operating system. Ships with one 7-round magazine. This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required). Weight of upper is 5.37 lbs.
$819.00
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Flat-top receiver, 16.5" chrome moly barrel, 1:20 twist rate, and low-profile gas block with Midwest Industries free-floating four-railed handguard. Direct impingement operating system. Optionally threaded 49/64-20. Ships with one 7-round magazine. This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required). Weight of upper is 4.45 lbs.
$934.50
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Flat-top receiver with 12-inch barrel and carbine-length A2-type handguard. 1:20 twist rate. Direct impingement operating system. Complete upper receiver comes with 49/64-20 TPI threaded muzzle. This upper receiver assembly is intended for use with a registered SBR or class III lower receiver. This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required). All NFA rules apply. Threaded muzzle devices are optional and must be selected as an upgrade option. Ships with one 7-round magazine. Weight of upper is 4.3 lbs.
$829.50
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.50 Beowulf Upper Kit DIY. Includes complete upper receiver, gas block, dowel pins, gas tube, 16" threaded barrel with thread protector, and complete BCG with bolt.
$700.00