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Found 6 results

  1. This will be a comparison of the T&N handguard and the Firebird handguard. It covers the alignment of the handguard with the upper, and the methods used, components and manufacturing techniques, assembly and disassembly, and details along with descriptions of all parts used by both companies. The T&N handguard is manufactured from a length of extruded aluminum tubing in an oval configuration. They have various models of various lengths, and a variety of detachable rails that bolt directly to the extrusion. The front face of the extrusion is capped with an aluminum plate, and I wou
  2. In this post I will discuss the differences in the Tooth and Nail buttstock adapter, and the Firebird buttstock adapter. The first photograph shows two iterations of the Tooth and Nail buttstock adapter, along with the original Tromix adapter. Note Tooth and Nail's first attempt had no provision for the location of the threaded hole in the upper receiver to vary. This resulted in customers breaking their lower receivers. The design was refined and can now accomodate variances seen in the MKA factory parts and it also sports a nicer paint job. It should be noted Firebird uses only high qu
  3. This will be a side-by-side photographic and functional comparison of a complete Tooth and Nail built MKA-1919 and a complete Firebird built MKA-1919. In this post I will compare the machine work performed on a stock MKA lower receiver in order to accept both buttstock and pistol grip adapters. Just for information, Tooth and Nail originally told their customers to cut the buttstock off at .600", Firebird had recommended to never cut this less than .900" so the receiver could maintain structural integrity. But we found on this example Tooth and Nail has cut this receiver to .900".
  4. In this section I'll show and discuss the differences between the Tooth and Nail Armory pistol grip adapter, and the Firebird pistol grip adapter. In the T&N design, the pistol grip adapter freely falls into the lower from above, and is retained by a small shoulder measuring a mere .032" thick. It is held in place by the pistol grip and pistol grip screw. It is identical in design to the original Tromix pistol grip adapter, with the exception of the thickness of the retention shoulder. The Tromix adapter had a substantially more robust shoulder, but keep in mind this feature protrudes
  5. In this installment we will discuss the T&N and Firebird fire control group. Since the trigger used by both companies is a standard, milspec AR-15 trigger, I will only cover the hammer and disconnector. Baseline facts, the fire control group is based and designed around an AR-15 fcg, with obvious differences in the geometry of the secondary sear and the design of the striking face of the hammer. The original MKA hammer is manufactured from .200" thickness tool steel, and has a mild heat treat of apx Rockwell 48 to 50. It weighs approximately 510 grains, but 82 of those grains are
  6. Feels GOOD , to go from, idea to market about 4 weeks Shipped the first run of forends today , the rest of the first run will ship on Monday. Railed ones should begin shipping mid week , if all goes well. Thanks again for your support and encouragement, couldn't do it without you guys
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