In Stock SKU: 08-246S

MODEL/DESC: 14.5" Geissele Super Duty Upper 5.56 Mid-Length

For those rifle enthusiasts looking for the ultimate short-barreled rifle (SBR) build, include the Geissele Automatics Super Duty Barreled Upper Receiver with a 14.5" 5.56 NATo barrel. Build your custom, dream rifle from the ground up. This stripped upper doesn't include a charging handle, bolt carrier group (BCG), or muzzle device. Geissele uses a 14.5 inch Geissele barrel with a 1-7 rate of twist and a 1-2/28 threaded muzzle at the end. Be sure to order a muzzle device that is compatible with these threads before purchasing.


  • Forged 7075-T6 aluminum receiver
  • Desert Dirt hardcoat anodized
  • 14.5” cold hammer forged barrel
  • Chambered in 5.56 with a mid-length gas system
  • Threaded 1/2x28
  • 14” SMR MK16 free float M-LOK handguard

The Geissele stripped upper allows for a dust cover and forward assist button purchased separately. Featuring M4 feed ramps and machined to mil-spec standard, this upper will be the main highlight of your custom build. The top of the stripped upper includes a Picatinny rail for the mounting of iron sights, a red dot optic, or rifle scope.

NO BCG,CH, Muzzle Device Included

NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR-15 pistols or legal short-barreled rifles. ALL NFA RULES APPLY

MFG Geissele
MODEL 14.5" Geissele Super Duty Upper 5.56 Mid-Length
TITLE 14.5" Geissele Super Duty Upper 5.56 Mid-Length - DDC

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