What guns are 80%?

An 80% lower is an un-serialized receiver blank, an unfinished firearm that is not operable and cannot be made to operate without additional fabrication. An un-finished 80% lower cannot accept a trigger, hammer, or safety, so it can’t be made to fire a live round.

Is a .380 the same as a 9mm?

380 auto and 9mm ammunition are all the same caliber. (Caliber is the size of the projectile, or bullet.) The different names are for marketing reasons or because of where the cartridge was developed.

What is ap80?

So, you’ve heard the buzz: You can build a Glock-compatible pistol (in any series!) at home by using a polymer 80% frame. Aptly named the Polymer 80 Pistol, this new entrant to the market of the world’s most popular handgun is making waves.

Can you finish an 80 lower with a drill press?

A drill press isn’t designed to mill, but lightly milling an 80% lower can be done safely. Completing the receiver requires only polishing the walls and floor with some “drill” milling. Your lower can be substantially finished using a drill press and vertically drilled holes and cuts.

What caliber is AR 15?

.223 caliber
Both the AR-15 and the M-16 use .223 caliber ammo, with a bullet that is about the diameter of a pencil eraser. It’s the same bore size as a .22 long rifle cartridge, made for plinking and squirrel shooting.

How deep do you mill an AR lower?

Milling Shelf Area The maximum depth for milling the rear shelf is 0.630” from the top of the lower receiver. Use caution when milling the rear shelf area not to mill into the jig bolt. Remember to start with at least 1/4” (0.25”) of the shank touching the adapter plate to prevent damage to the adapter plate.

What tools are needed to complete an 80% lower?

Required Tools

  • 80% Jig with Bits. The single most important tool you need to complete your 80% lower is a jig.
  • Drill Press or Mini-Mill. Utilizing the jig to complete your receiver means having either a drill press (good) or mini-milling machine (great) on hand.
  • Vise.
  • Machining Oil/Cutting Fluid.
  • Bit Stop Collars.
  • Calipers.