300 AAC Blackout 11.5" SBR Complete Upper

- Lightweight 11.5" button-rifled, stainless steel barrel
- 1:7 twist rate
- MK10 series carbine handguard
- Low-profile gas block
- 5/8-24 RH threaded muzzle (non-optional)
- No muzzle device is pre-installed
- Direct impingement operating system
Ships with one 30-round magazine (Unless restricted by your state in which no magazine will be shipped)
- Weight of upper is approximately 3.4 pounds.

This unit is 100% complete and is compatible with any standard-specification lower receiver (no modifications required)

All NFA rules apply


All uppers and rifles are built to order and have an estimated lead time of 4-6 weeks.
Charging Handle Upgrade - Please select this option if you would like to upgrade to the Raptor Ambidextrous charging handle.
Handguard Upgrade - Please select the Midwest Industries four-railed handguard upgrade
Muzzle Upgrades - Please select a muzzle upgrade
Camo Upgrades - Select a camo upgrade. Requires a non-refundable deposit of the cerakote upgrade price once the order enters production. Cerakote is applied to handguard and receiver only.
Base Price: $755.21
Selected Options: $0.00
Total Price: $755.21

All Alexander Arms® upper receiver assemblies are fully-complete, function-tested, and ready to fire.

Approx Weight: 3.40 lb. / Each
Dimensions (LxWxH): 20.00 x 3.00 x 3.00 in.
Don't forget your accessories and ammunition! - We have quality magazines, ammunition, and handguard accessories available for this rifle. Be sure to order these now to avoid additional shipping costs and delays! MK10 rail sections and Manticore Arms panels are sold separately.
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