A few years ago I started gathering parts for a 7.62x39 AK SBR build. I wanted an Arsenal SLR-107CR, but was still mad regarding how poorly they treated me in regard to the unreliable SLR-106UR and SLR-106CR rifles that I had. So, I decided to avoid Arsenal and put something similar together myself. I started by getting a barrelless AMD-65 kit. Next I purchased one of the 12.25" 7.62x39 barrel assemblies from K-Var that has the integrated front sight and gas block. I also bought a US side folding stock set, Bulgarian rear trunnion side folding assembly, front latch parts and a Bulgarian side rail from K-Var. I don't remember exactly what I paid for all these parts, but I was able to get them at various times on sale, so I did pretty well. I checked the press fit of the Bulgarian barrel assembly in the Hungarian front trunnion and quickly found out that it slid right in. Also, the rear sight block on the barrel assembly wouldn't fit between the "ears" of the front trunnion. So, I had two problems. First, there was inadequate press fit between the trunnion and barrel journal. Second, even if I had enough of a press fit, the rear sight block wouldn't nest above the trunnion anyway. I went through a bunch of my kits and quickly figured out that the problem with the press fit was caused by the barrel journal being undersized as it didn't have a proper press fit in any front trunnion I tried. That was until I tried a virgin Yugo M92 trunnion. For some reason, the M92 trunnion has a slightly smaller inside diameter that would provide a good press fit. Best of all, the ears on top of the M92 trunnion are further apart than on a regular AKM trunnion. As a result, the rear sight block slid right between them. Problem solved! I purchased another M92 front trunnion off of GunBroker and had the serial number of the Hungarian kit engraved on it to keep everything matching. I bought a NoDak Spud NDS-1KP stamped receiver and had it custom serial numbered to match the Hungarian kit (yes, this was way back when they would do that). I had the receiver engraved with Hungarian selector markings. Finally, I bought a Bulgarian AK-74 gas tube, an East German AK-74 ribbed top cover, a Tapco single hook trigger group, a US gas piston, and a CNC Warrior Bulgarian style 24mm birdcage flash hider. Of course I had to get the stamp for the SBR too. I had intentions of building this rifle for a few years, but couldn't find the time. Plus, I had visions of screwing up the drilling of the barrel pin. I decided to sent the whole kit to Two Rivers Arms. Here's a picture of what went out the door.
Here's what I received back from Two Rivers Arms:
Not only does it look good, but the action is as smooth as glass. Everything fits like it was meant to be.
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