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Underfold

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AK Receivers


AK47 (7.62 x 39 caliber)  Available
Various Receivers

The Firing Line is proud to offer you the MLS99. The MLS99 is the First AK style milled receiver Built in the USA and Available to the Public. The MLS99 is built to accept Chinese, Bulgarian and Romanian barrel diameters, as well as all G.I. parts. The MLS99, along with 3 US Made trigger parts allows the use of imported parts elsewhere, which helps ensure the assembling of a legal, working firearm. We are now offering the MLS99 in AK47 (7.62x39) and AK74 (5.45x39) Variations. 


  • Milled from a solid piece of 4140 annealed steel (no casting)
  • Heat treated to 45 Rockwell
  • Made in the USA
  • Has one of the smoothest actions you will ever experience
  • The Firing Line can custom build your rifle with your parts kit

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    NOTE:  You must have your FFL Dealer fax or mail us a valid, legible copy of their FFL.  It is not our responsibility to track down your local FFL dealer and/or their information.Your item will not be shipped until we have a copy of the FFL in our hands.  Thank you!