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AK-Builder 80% Prebent US AKM 7.62x39 Receiver Blank With Trunnion Holes

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Our quantity discounts:
Quantity 2+ 5+ 10+
Price $44.95 $41.95 $36.95
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NEW Bent Receiver Blanks - 80% Complete

These come with the lower bolt guide rails, but are not installed

Just like our fixed stock 7.62 receiver flat, without the fire control group holes these are bent and ready to go. Simply weld in your bolt guide rails, drill and install the center support, use our V5 driling fixture to drill the fire control group holes and heat treat.  Made here in house and counts as a 922R part. The top rails are already bent, embossed, and machined unlike the Polish 80% blanks. We offer this item as the shell itself and as a heat treated blank listed separately on the website. Includes the Y and I stamping for a more authentic look!


Made from 4130 Annealed Steel.

This item is made in the United States and counts as a 922r compliant part.

Rail-Center Support Options:
Blank Only
Receiver Thickness:
Rail alignment fixture to install the lower bolt guide rails in stamped receivers. The rails clamp inside the fixture which inserts into the trunnion to...
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THIS WILL INSTALL THE FRONT/REAR TRUNNION RIVETS AND CENTER SUPPORTS .  It will not install the trigger guard rivets. Are you ready for a...
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V-5 Standard or Underfolder-Sidefolder Plates
AK-BUILDER Receiver Blank Drilling Fixture This tool is designed to be used with 80% receivers with OR without rails and center supports...
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This spot welder tong is designed to work with the Harbor Freight #45689 welder or 61205-61206 if you get the extended tip . Avoid the 220v...
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Type: V-4 For 1.5mm Receivers, V-5 Standard or Underfolder-Sidefolder Plates
Options: AK74 Fixed Stock, AK74 Sidefolder, AKM Fixed Stock, AKS Underfolder, Bulgarian RPK 74, Chinese Mak 90, PSL/FPK, Polish Tantal, Romanian RPK, Yugo M70 1.5mm Underfolder, Yugo M70/M72 Fixed Stock, Yugo M92/M70 1mm Underfolder
Premium Flat Options: With Y & I Embossing
Rail-Center Support Options: Blank Only, With Rails and Center Support
Save 16%
$189.95 $159.95
Journal Size: 0.908 Standard, 0.910 Oversize, 0.920 Oversize
Flat Style: B2-21 Romanian Underfolder, B2-51 Polish Underfolder