Parts Is Parts

The four parts of the drop-in auto-sear are a pretty straight-forward proposition. The sear housing can be made from either mild steal or aluminum. The housing bears very fittl stress, so a hsrdened housing is not needed. The sear trip is another story. This is the part of the drop-in sear that takes the beating. It no only catches the hammer in a cocked position, (t also is struck with the full force of the bolt carrii each time the weapon cycles. Firing at a rate of 750 rounds a minute. It...

Notice

This book contains information chat gives explicit detail on Che construction end or conversion or fully automatic firearm*. This la offered se information for academic study only. On Mey 10th. 1880. e new MF.A. full-auto flresmns lew went Into effect. As of that date it Is no longer legal for an unl Ice need individual to convert e semi-automatic firearm Into a machinegun or eub-machinegun. The B.A.T.F. form I will not be accepted by the Btraeu of Alcohol. Tobacco snd Fire or me. If it was not...

Upper Receiver Cut For M16 Auto Sear To Not

The upper receiver needs a clearance cut machined into it. Refer to drawing E . The purpose f the cut is to clear the shoulders of the auto-sear which protudes about .050 above the top of ie lower receiver walls. Whether you mill, rout, file or grind this clearance, makes no difference, s long as you make sure the auto-sear will not rub.

Mb duplication

The M-16 was developed as a fully automatic selective Fire weapon by the Armalite Company. It was subsequently said to Calt Firearms. They developed a semi-auto version known 8B the AR-15 to be sold as a sporting rifle to the civilian market. The AR-15 is mechanically the same as the M-16 except the parts used to produce fuMy automatic fire have been changed or deleted and the upper and lower receivers have been slightly modified. All AR-15 lower receivers, whether they are Colt or after...

Bolt Carrier Converter

Difference Between Ar15 Caliber Carriers

Tha bad news is Che days of inexpensive M-16 bolt carriers is a thing of the past. The good news is with a little work the AR-15 carrier can be modified to M-1B specifications. The only difference between the two carriers is that the AR-15 has had the area that trips th auto-seer machined off. By manufacturing the bolt-on adapter shown in the drawings, the AR-15 bolt carrier can be adapt for use in a machinegun. Vou not only save fifty or sixty bucks you can also keep the old lady happily busy...

Testing for function

M16 Sear Engagement

Step I Cock the hammer, place the seise tor in the safe position. Pull the trigger, the hammer Step 2 , With the selector in the semi-auto position, pull the trigger, the hammer ahould fall. Keep holding the trigger to the rear, recock the hammer and release the trigger. The hammer should release from the hammer hook and reengage in the hemmer sear, NOTE The hammer should not Fall fram this position until you pujl the trigger again. Step 3 With the selector in the full-autD position, pull the...

The Way It Works

Lightning Link

In normal semi-auto operation the hammer is cocked by a rearward movement of the bolt carrier, as Che carrier moves forward, the hammer is caught and held in the cocked position by the sear located on the forward part of the trigger catching in the sear notch, on the hammer. If you hold the trigger after a shot's fired the sear will not catch in the hammer's sear notch when the hammer cocks because the sear is depressed below the arc of the hammer notch. What happens is because the trigger is...

Ar 15 22 Lightning Link

As long as the trigger is held back, the sear s held below the arc of the hammer notch. The only thing holding the hammer in the cocked position is the disconnector. The lightning link accomplishes full-auto fire by pulling the disconnector to the rear forcing it to release the hammer. The assembled link lays flat in the lower receiver, with the opening at the front fitting over the hook of the disconnector, and the upright resting between the upper receiver take-down pin post, and the bolt...

Barrel Length

Barrel Length Comparison

Shortening the barrel is a job that's best done on a lathe. It's just about impossible to cut it o and rethread it by hand and get everything straight. Whether you chap it off with a hacksaw and rethread it with a die or cut. crown and thread on a lathe, keep in mind a barrel is measured from the belt face to the muzzle, not from the fro af the receiver to the muzzle. The drawing and table indicate how to measure and cut the barrel for the moBt popular lengths.

Puttin it all together

Disconnector Spring Installation

Reassembly of the lower receiver is next. For the parts needed to convert the AR-15 to M-16 configuration, other than the M-16 auto-sear jarts, refer to drawings page 13. numbers 1. sear spring, 2. sear pin, 3. sear bushing, and 4. sear tody parts 1 3. and 4 are normally assembled when you purchase them are M-16 hammer, lisconnector, trigger, selector switch, and bolt carrier, shown on page 11. The AR-15 parts and their M-16 counterparts are shown on pages 10 and 11. Jtep 1 Install the M-16...

Bolt carrier

Homemade Guns Ar15 M16

Comparing the M-16 parts on this page to the AR-15 parts on page ID, the differences become readily apparent. The M-16 carrier has not had the lower sear contact lip machined short The hammer for the M-16 has an extended spur, with a notch cut into it The only difference in the triggers is the M-16 one hBs been machined through the rear wall An M-IB disconnector has a long tail The M-16 selector switch has a third detent position for full-auto, a earning surface for the disconnector and a...

Converter trip

Glock Lightning Link

The carrier converter can be made From low carbon steel and case hardened, using a product like Kasenit surface hardening compound. NOTE Complete hardening instructions come with Kasenit . Better yet. build the parts from oil hardening carbon steel drill rod. This can be hardened with a torch by heating the part a bright cherry color and immediately dropping the heated part in 10 WT. motor oil. WARNING Do this outside, because you're going to get some To temper the parts after hardening, place...

Removing Handguards

Left Remove

Swivel roll pin 5. Front swivel Removing the handguards will not be necessary unless you intend to shorten the barrel. If you want tnem off pull back on the large slip ring at the front of the upper receiver to release them. Remove one side at a time. After removing the upper receiver and barrel assembly, disassemble the lower receiver. The hammer and trigger disconnector pin3 come out from the right to the left. Remove the hammer first, then the trigger disconnector....

Building Lightning

Lightning Link Dimensions

The drawings show the shape and give the dimensions for a Lightning Link that fits in the Colttm AR-15. If it's to fit in an after market lower receiver it may be necessary to change the outside dimensions. Either way. all that's really important is that it fits inside the receiver and can move back and forth about 1 16 inch. When building the Lightning Link without a milling machine I find the simpliest way is to cut the long piece to length and width. Next center Dunch and drill a l B inch...

Dropin Autosear

Illegal Converted Weapon

I don't like drop-in auto-sears Not because they don't work, because they do. They not only work, but in my experience an AR-15 equipped with a drop-in auto-sear works as well as an original government issue M-16. The problem's not with the auto-sear, it's with the laws governing its use. The drop-in auto-sear was designed in the mid 1970's for the sole purpose of converting the AR-15 to fire full-autD select fire . If you buy a drop-in auto-sear that was manufactured after November 1st, 1981....

New stock assembly old stock assembly

M16 Assembly

It will be necHssary to disassemble the AR-15 bolt carrier. The parts will be reassembled in the M-16 carrier. Step 1 Remove the firing pin, retaining pin Cpart I from the carrier. Step 2 Let the firing pin part 2 drop out the rear of the bolt and carrier. Step 3 Remove the key Cpart 3 from the top of the bolt carrier. Note the two alien head key screws will be staked in place. Step 4 Pull the bolt cam pin part 3-A out the top of the carrier. Step 5 Pull the bolt out the front of the bolt...

M16 Assault Rifle

M16 Assault Rifle

I was thinking whan I started this book Laudy, Laudy. I wish I'd had something Jfke thia whaJ I first started converting AR-15's to fufl-euto. No such luck. Back then it was trial and error and try again, j Don't get ma wrong. There were those that seemed to have the required information. They hung out at Gun Shows and ran ads in underground newspapers. After paying any amount from gt 20.00 to 75.00 you would breathlessly be told how their brother-in-law. cousin, neighbor friend pick one did...

Lightning Link

Lightning Link

This thing's as slick as owl do do No worries about M-16 parts. No machining or drilling on a six hundred dollar gun. The parts can be made from tool steel, machined with great precision, hardened and tempered with loving care, then polished to a high gloss that your mother would be proud of. On the other hand, using only a couple pieces of power hacksaw blade to make the parts from, a dremeJtm tool, hand drill, and one or two files to do the work, you can cut out the Lightning Link in about an...