LPK look to be put together by CDNN as the parts are loosely packed in three small zip lock bags in a larger larger zip bag with the pistol grip. The hammer is something I've never seen before, it's cut off on the back side and has a saw tooth appearance, the trigger and hammer both look to be chrome plated, give the appearance of Stainless Steal but I don't believe it's SS. Even though I'd say the LPK is most likely of very inexpensive sources the trigger pull itself is not at all bad. Have not live fired the completed rifle yet, Barrel is acid etched 300 BO, no indication of maker, upper has a Key hole forge mark, no other indication of maker, Butt stock seems a bit tight but is of questionable quality, buffer is plastic and loud as the weights are so loose they sound like they are rattling around inside of the buffer. Bolt is MPI marked but no other indication of manufacture, bolt and carrier have a glossy appearance, possible it's nitride but I suspect their just blued. Shooting will tell if the finish wears thin quickly. For the price it's what I expected but the DPMS parts kit in the picture is total BS.
Edit, I should add I purchased the CDNN kit based on reviews here even thought there was a decided lack of clear information. In no way am I disappointed by what I received, it is exactly what one should expect for the price point, as long as it functions it's make a fine truck gun and/or starting point for project gun.