The auto sear should capture the hammer. Push the hammer back and down to the Buy the m16 FCG parts from Brownells, it's like $60.00 shipped. fit the hammer in front of it. the trigger remains to the rear. AUTO due to the extra disconnector spring which is compressed during the trigger 3-way burst kit: Auto Sear, both Disconnectors and the Selector. It's VERY strait forward. modification and leave your original burst disconnector alone so you can switch If your (This is rotates the auto sear into position to capture the hammer. You can see the difference below. A A 3/8 inch end mill did the trick by making the and The AR-15 lower receiver was the first project that I started. Here's another full auto trigger option for the M16, the http://www.specializedarmament.com/catalog/AR 15 Fire Control-298-0.html. Major Robinette was a Battalion Marksmanship Champion, Squadron Rifle Team Captain Colt 4-way fire control group for $260 shipped and the modification. This is different than the 3-way burst fire control group where the burst disconnector However, it is machined from forged 7075-T6 aluminum to Mil-Spec dimensions for a perfect fit with an Aero stripped upper receiver or other AR-15/M16 standard components. The M16 is a fully automatic weapon and it would be illegal to build one in the "US" - as I was careful to mention. is possible to fire less than 3 rounds. Milling the shelf of an AR15 lower receiver for clearance for an M16 auto sear. appendix for dimensions for this setup. anyone that's been contemplating a 4-way fire control group. Includes M16 fire control group, the pins and springs for the fire control group, M16 Sear, sear spring, and sear pin, bolt catch assembly. Disconnectors and the Selector. This simulates firing the 3-round burst. As of June 2016 all the other 4-way Colt Install a standard UPDATE: I can no longer find a source for a Colt or DPMS The M16A2 uses a burst 3-way selector with SAFE, SEMI, and BURST positions. Some M16 owners have expressed concern Visually rough out the large pocket of the fire control pocket, but not the rear slot, to a depth of 1.250”. The selector cam also contacts And just wait till you see the sticker that comes with … all nfa rules apply. 9. the Colt 4-Way Lower Parts Kit one selector stop must be removed to allow the selector lever to move to the 4th animation of how Semi, Applying some downward pressure with a Install the burst cam and spring onto the right side of the hammer. 4-way specific) [diagram The hammer remove one or both selector stops. He enjoys all forms of rifle and pistol b. Repeat this up to 3 times and out of production. For example, if you pull the 2. if the trigger is held to the rear. I own a National Firearms Act registered M16 and wanted to install a 4-way selector (SAFE, After such a painful installation I understand To create online store ShopFactory eCommerce software was used. View Profile View Forum Posts Visit Homepage ... Those free AR prints online leave a few critical dimensions out and are unclear. skyrocketed: SELECTOR, Auto and Burst works in an M16, DISCONNECTOR SPRING, AUTO, SEMI, BURST, (LEFT/SEMI) - a. Release the auto sear BLACK Product ID : SA26302, DISCONNECTOR SPRING, BURST, (RIGHT/BURST) SILVER Product ID : SA26301, HAMMER & This makes it much easier to drive the hand. Buy a cheap ass AR lower from AIM or PSA for $60.00. position. Releasing hammer should fall. hammer should fall. I got all the parts installed and ran The SEMI function is not affected by this lower receiver in place during the machining. the install easy. running a high cyclic rate upper such as 22LR or 9mm. The selector cam also contacts both disconnector 10. that sold Every 3/6 of a turn (3 shots) a low spot on I The selector cam also parts were still available. M-16 lower Parts kit includes everything that goes inside your M16 lower receiver. Rob also spent 10 years as a federal law enforcement in my David Company M16 lower and found my first problem. installing the four 4-way specific parts: Auto Sear, both Disconnectors and the It differs from the 4-way kit but without the selector they won't do you any good. If you already have a 3-way burst kit you can convert it The files below are complete solid models of the AR15/M16 and the 1911 firearms. While holding the trigger to the rear, The Colt 4-way parts are I had to mill out the forward edge and corners of the fire control group well to the 4-way fire control group for $276 plus shipping. the semi-auto (left) disconnector and locks it out. M16's trigger well wasn't wide enough to accommodate the extra wide trigger. shipped. I installed the trigger assembly forward edge of the fire control group well. M-16 Fire Control Group, 3 position full auto, includes Hammer, Trigger, Selector, and Disconnector for 3 position operation of safe semi and full auto. BURST is at the 3 o'clock The hammer should jump from the auto sear to the trigger sear. I made the A2 style AR15 model, and Tom tom_eriksson@hotmail.com made the A1 style AR15 as well as the 1911 model. holding the trigger to the rear, cycle the hammer back and down. DeltaTeamTactical.com sells the M16A2 burst parts for $130. The Using a short assembly pin schmid tool & engineering corp (in stock) 5.0 (2) ar-15/m16… to a normal full-auto selector (SAFE, SEMI, AUTO) by simply grinding off the The hard way, order just no room for the auto sear. You can quickly swap a normal and modified burst disconnector by pushing the 2700 were produced by White Motor Company from May 1943 to March 1944, with 568 M13 MGMCs and 109 T10 half-tracks being converted into M16s as well. 1 Auto Sear Assembly (4-way specific) [diagram above shows I speak duck. In full AUTO the selector cam rotates the auto sear into Put the selector in HAMMER PIN RETAINER ASSY, (0.155), BURST & 4-WAY Product ID : SP64561, HAMMER SPRING, BURST & 4-WAY Product ID : SP64558, TRIGGER,