[WTS] ADM/GEISSELE/CRITERION 300 BLACKOUT COMPLETE UPPER
timestamp: https://imgur.com/a/IAzzPyS
FOR SALE:
- 10.5" 300 BLACKOUT COMPLETE UPPER - All Top Shelf parts!
Selling my last AR platform rifle setup. This upper was configured as part of an SBR. Keeping the matching engraved & registered lower for a future build. She was carefully maintained and safe stored. Just over 200 rounds on the Criterion Core 10.5" barrel.
Professionally polished feed ramps. This only saw suppressed fire during indoor range trips. No rapid or extended strings of fire.
The Geissele MK8 rail is brand new and delivered 2 weeks ago direct from Geissele. I can provide the rail's documentation as proof is required.
- THE BUILD LIST:
- COMPLETE UPPER:
- RAIL: Geissele 9.3" MK8 in DDC color. BRAND NEW! Will ship with the OEM materials.
- UPPER RECEIVER: ADM UIC IN Anodized ODG color. Like new! Shows a couple of tiny blemishes from optic mounting in the rail and takedown and installs for cleaning after each range trip.
- BARREL: 10/5" Criterion Core in 300 Black out. Never pin & welded. No muzzle device. Only ran it suppressed. It has been Bore-tech cleaned and prepped for sale.
- GAS BLOCK: Superlative arms adjustable gas block. Will ship with OEM adjustment tool and materials.
- GAS TUBE: Aero Precision Melonited.
- BOLT CARRIER GROUP: Lantac E-BCG. Full Auto Style. Suppressed fire and thorough cleaning resulted in a dulled sheen. Still like new function. Fully stripped, cleaned and oiled for sale.
- CHARGING HANDLE: Geissele Super Charging handle in DDC. Shows normal signs of wear and use. Cleaned after each trip.
- DUST COVER: FCD Single Dimple EPC in ODG. Shows normal use on hinge stops.
- Will not ship in OEM packaging.
- OVER $1,500 if built today.
- COMPLETE UPPER:
SELLING PRICE: $1,000 Shipped and insured TYD
Accepting PayPal F&F Only. NO NOTES PLEASE!
I am open to hear reasonable cash offers. The worst I can say is no.
PM me first to avoid scammers. I will not PM you.
Reply to the post with dibs first, then PM.
I will not PM you first. I will not respond to PM's without dibs or comment of "PM'd" first.
Only shipping to the contiguous USA!
All funded/paid orders will ship the following shipping day or same day in some cases. I am good with additional questions and specific additional pictures requested.
Only selling to established GAFS members with history of multiple trades to avoid any issues.
No ghosting after PM. I must move to next dibs and/or buyer after 30 minutes with no response from you.
cross posted
Posted Jul 4, 2025, 1:20 AM UTC