Custom 6mm ARC Premium Barrel Stainless

• Gas Block Journal *

  .750 (Standard).875.936

• Add Gas Block *

  No Thanks.750 Stainless (Standard) + $40.00.750 Steel (Standard) + $35.00.875 Steel + $35.00.936 Steel + $35.00Superlative Arms Adj. Gas Block (Black) + $95.00Rifle Speed Gas System + $205.00
•  Gas Block Disclaimer (You must check the acknowledgment box) *

  Not all Gas Blocks will work with all barrel configurations. If you order a barrel under 9" with a "Q" taper you a WILL NOT be able to use a Rifle Speed gas system. If you order a barrel under 6" the Superlative Arms Gas Block will not work. If you have questions just ask! We are glad to talk to you! (480) 440-1878

• Gas System Length *

  PistolCarbineMidRifleRifle+1Rifle+2

• Add Gas Tube *

  No ThanksPistol + $14.50Carbine + $15.50Mid + $16.50Rifle + $17.50Rifle+1 + $21.00Rifle+2 + $22.00

• Gas Port Sizing *

  I Plan to Shoot SubsI Plan to Shoot SupersI Plan to Shoot Both (Adjustable Gas Block will be needed)

• Crown/Muzzle *

  5/8x24 Threaded Flat Target5/8x24 Threaded with 11° Crown + $15.00Flat Target Crown (No Threads)11° Crown + $15.00

Adding Nitride or Cerakote to your barrel will extend your lead time out 2-4 weeks depending on our vendor lead time.

• Barrel Finish Options *

  Standard Bead Blast (Matte Finish)Polished (SS) + $50.00Nitride Black (QPQ) + $50.00Graphite Black (Matte Finish) Cerakote + $50.00Elite Black (Shiny Finish) Cerakote + $50.00Titanium Cerakote + $50.00FDE Cerakote + $50.00McMillan Tan Cerakote + $50.00Burnt Bronze Cerakote + $50.00O.D. Green Cerakote + $50.00Noveske Bazooka Green + $50.00Sniper Gray Cerakote + $50.00Sniper Green Cerakote + $50.00
•  Cryogenics * + $100.00

  Cryogenics will add 2 weeks to your barrel lead time

• Type II Bolt *

  Yes (Everyone has to have a bolt headspaced, so you MUST choose an option) + $0.00No Thanks, I will send my own bolt in + $15.00Add a Type II Head-Spaced Bolt + $75.00Add a Type II Head Spaced BCG + $160.00

  We require that a bolt be headspaced to each 6mm ARC barrel we send out. The industry standard for Type II Bolts is too varied, and in order to ensure that you have a fully functional barrel your bolt must be headspaced correctly. You can either send in your bolt to be headspaced or you can purchase a MOS-Tek bolt. If you are sending in your bolt please include a note in your box with your name, phone number and order #. Ship the bolt in a box, not any type of envelope, they can easily be damaged (happened on more than one occasion) Send it to MOS-Tek PO Box 50515 Mesa, AZ 85208. Thanks!

•  Sig/Q Taper * + $25.00

  The Sig/Q Taper is a 25° taper added for specific muzzle devices and suppressors. You will know if you need this.

•  Assemble Complete Upper with my Parts * + $150.00

  You send us your components and we will send you back a complete upper receiver. Test fired and ready to go! We've got the tools! Put the guys to work!

•  Perfect Fit * + $45.00

  Do you like a "Seamless Transition"? Send us your hand-guard and suppressor so we can make your barrel the exact length to hide the transition from barrel to suppressor. You don't need to use an FFL, we can accept your suppressor as "Gunsmithing". Easy!

•  Double Dimple * + $45.00

  We dimple our barrels! If you want a second dimple we can do that! Send us your gas block for correct placement, or purchase one from us!

•  Gas Block...Pin It! * + $45.00

  We can pin your gas block to your barrel...in fact we will if that helps you out! We will drill it, then you can set the pin. We will need your gas block in order to set the dimples correctly. See shipping instructions for information on sending that to us.

•  Pin & Weld * + $45.00

  We will install your muzzle device on your barrel then pin and weld it. It’s not going anywhere!

We won't over promise and under deliver...We'd rather send your barrel to you early, then have it be past our estimated lead time. Machining a quality barrel takes time. We can't speed up the machines in order to lessen lead times, that will compromise quality and accuracy. We have recently brought in new machines and 2 more guys in an effort to shorten lead times. We are committed to making quality and that puts our lead times out. We apologize for the waits, and hope you will be willing to wait while we make you the best barrel we can. You are welcome to call with any questions! We are always glad to talk to you!

•  Current Lead Times are 30+ Weeks *

Check "Shipping Instructions". This link will take you to the Mos-tek "Shipping Instructions" page. There are shipping instructions at the top of this page. Please follow these when shipping in your firearm. If you need clarification feel free to call anytime (480) 440-1878

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