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Instructions for MANUFACTURING an AR-15 receiver with the BAXTER
Lock forging into Jig Attach Drill Plate
First Drilling to about 3/4" depth - remove any chips
Remove Drill Plate - drill to print depth remove chips
Mill or drill with 3/8 mil cutter and clean out chips
12 Pages of Instructions & Pictures
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Completing an PCR 80 AR-15 with the BAXTER PLATE
ALWAYS!! Keep in a fixed position with clamp or vice!!
REQUIRES low feed and speed not to exceed 550 RPM with plenty of coolant
READ AT LEAST THREE TIMES TAKE YOUR TIME!!
"Mounting" the blank into the BAXTER drilling fixture. The following operations are assisted by the jig. Using the BAXTER, you should be able to handle these operations.
A drill press is required; a mill is optional See options below
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Front pivot pin - hole drilled with 1/4" |
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Rear takedown pin - hole drilled with 1/4" |
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Trigger pin - hole drilled 5/32 |
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Hammer pin - hole drilled to 5/32 |
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Selector - hole drilled to 3/8 |
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Bolt hold-open plunger drilled with 5/32" to a depth of .470" |
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Trigger guard - left side - drilled with 1/8" through both ears |
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Trigger guard - right side - drilled with 1/8" through only one ear |
The next group of operations - measure and mark before drilling. The fixture assists in these operations by giving a means of securely locking the receiver into one fixture on your work surface.
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Front pivot pin detent - hole drilled with 3/32" to 1.125" deep |
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Rear takedown pin detent - hole drilled with 3/32" through to detent pin hole |
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Selector detent - drilled through to selector with 1/8" then countersunk with 5/32" |
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Bolt hold-open pin - hole drilled to 3/32" with 6" aircraft bit |
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Stock index hole - drilled with 1/2" |
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Grip hole drilled - with 7/32" |
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Buffer stop plunger - hole drilled with 1/4" to .712" deep |
The BAXTER lets you clamp the blank safely within a vise or to a work table while performing these operations.
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Fire control well is solid |
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Rear takedown well milled - by .030 with a 3/8" end mill – 1st option – use a Dremel type tool to open up the pocket ; 2nd option - shave down the rear lug of the upper receiver to fit the authorized pocket. |
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Buffer hole reamed - to 1 1/8" |
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Buffer hole tapped to -1 3/16" with 16 tpi |
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Rear takedown pin relief - cut with a 3/8" end mill & Grip hole to be tapped - for a 1/4" by 28 tpi |
Mounting the receiver within the BAXTER drilling fixture: The drilling fixture is a precision part. It matches up with our forged 80% AR-15 lower blank. The jig is formed by two sides cross bolted together with the receiver in the middle. The receiver indexes upon the jig on two sides. The top surface of the BAXTER is matched with the top surface of the blank and the rear surface of the jig matches the flat rear surface of the blank. Make these two surfaces flush and all your holes will be in the right place. Use two 1/4" drills butt first in the pivit pin and takedown holes for proper alignment.
These are Basic steps for fixing the blank within the BAXTER. TAKE YOUR TIME = do not hurry!!
