Picantinny Rail Specs

How A QEV Works

Official 2005 DOT Regulations

Polishing Tips

French Satin Wood Finish

VL2002 Hopper Mod

AutoCocker Pneumatics: Stock vs. Aftermarket

"Undershot" Bolts

Bore Drop vs. Breech Drop Pump Guns

Mig weld a M98 body? Ain't gonna happen.

Zap ZXS-600e/800e Mods

Drill Size for Odd Taps

Autococker eFrames

Cupped Bolt Faces

Setting an Autococker Sear Lug

Measuring Springs

Barrel Kits

AGD vs. Pro-Team Warp Feeds

Paint-to-Barrel Matching Variables

Aluminum and Heat

Viewloader History

Physics and the Real World

Smart Parts Will Destroy Paintball

VL-2000 vs. Revolution

Sheridan Recognition Guide

Tippmann F/A

PGP

Misc. Double Barreled 'Guns, including the Dual Mag!

Palmerized KP2-DF

The New Brass Eagle Angel semi-auto?! Yep, it almost happened! Here's another pic.

Anyone up for a game of Star Wars?

'Flame anodized' Stingray 1

Open Letter: To a customer from an airsmith

Tic Tac Toe

"I don't know, Glenn? But it seems pretty big to me!"

Physics of Santa Claus

SFPM chart - click here

Standard Drill Sizes - Decimal Equivalents chart: click here

Drill and Tap Chart - click here

RPM = 3.82 x SFPM / workpiece diameter (lathe) or cutter diameter (mill)

M5 is actually M5x0.8 (.197-31.75) and 10-32 (.190-32) would be (M4.83x0.794). So it's .007 bigger and has a 0.8% shorter pitch.

Sheridan 12 gram CO2 knob threads: 13/16-28
Taps at MSC: Bottoming, Plug, Taper.

Sheridan valve retaining nut threads: 21/32-32
This is a custom tap. You won't find it 'off the shelf'.

Angel feed tube threads: m21.0 x 0.75
This is a custom tap. ASP sometimes carries these.

Nelson power tube inside diameters:
number - ID
0 - 0.125" (1/8")
2 - 0.141"
4 - 0.156"
6 - 0.187"