Description
4″ 9mm AR-9 Pistol Build Kit
Disclosure: Handguards will be either keymod or mlok depending on availability. If you have a preference, please leave in the comment at checkout and we will try to accommodate the request.
This kit comes with everything minus the stripped AR-9 lower receiver to build an Ar-15 in 9mm
Kit specs
- Either mil-spec upper receiver or upgraded billet upper receiver (depending on availability)
- 4.5″ CMV 9mm barrel
- 9mm muzzle device w/ crush washer
- 4″ free-float handguard (keymod or mlok depending on availability)
- 9mm BCG
- charging handle
- mil-spec lower parts kit (USA MADE)
- 9MM buffer
- pistol buffer kit
Build Kits come unassembled
KIT notice as of March 1st 2020:
All build kits are subject to change slightly in this time of EXTREME demand. We are not currently able to fill specific spec requests.. the kit parts will fall into the general specs above but items such as stocks, handguards, and muzzle devices are changing daily.
Shooting steel case ammunition through our products voids ALL warranties!!!
Legal Restriction:
Durkin Tactical is currently using a third party vendor to verify the legality of our parts. If you place an order that is not legal in your state, city, town, county, etc., your order will be cancelled, charged a 20% restocking fee and the remainder refunded. Please make sure that your order is legal in the state, city, town, county, etc. it will be shipping to.













Steven Hunter –
Love this upper. Just bought another one too. No issues whatsoever after 1000 rounds. I bought one from another manufacturer and had to return it – would not feed rounds.