- Fire control pocket milled out - By: Justin / jwh02017 Rev. CNC --- M16 Lower receive... by Oliver. This difference ... Report Inappropriate Comment More . As long as you do not put M16 fire controls into a semi AR-15 you are ok. 12. This allowance will be machined during the finish pass. So assembly of the Sportsmans Guide M16 kit into an AR-15 rifle is OK as long as you either use an AR hammer, selector, etc or modify those M-16 parts into AR-15 semi (SP-1) configuration. Dimensions: 6 × 3 × .6 in: Reviews There are no reviews yet. This goes back to what I mentioned earlier about using a bigger drill to open up a smaller pre-drilled hole. Colt then marketed the Colt AR-15 as a semi-automatic version of the M16 ⦠The trigger pocket is also typically milled to different dimensions to prevent the acceptance of an auto-sear as well. Push the hammer back and down to the cocked position. You will be conventional milling the pocket in a clockwise direction around the lower receiver fire control pocket. See Figure 6. Some M16 owners have expressed concern with removing the selector stops from their very valuable M16 lower receivers (typical prices ⦠Leave an allowance of about 0.010â to 0.020â around the pocket. DSK Armory sells the Colt 4-way fire control group for $260 shipped and the DPMS 4-way fire control group for $150 shipped. Figure 7.4 The first and only cut on the left side of the lower receiver. Visually rough out the large pocket of the fire control pocket, but not the rear slot, to a depth of 1.250â. The actual lowers have a small relief at the reword most radius of the fire control pocket. Take note of the milling direction! M16 fire control group. ArmaLite as a selective fire rifle for the United States armed forces. M16 Fire Control Group-Full Auto Fire Control Group consists of: Hammer Trigger Disconnector Safety Selector Auto Sear With Pin THESE PARTS ARE INTEND You must be logged in to post a review. For the second cut, shift the end mill to the opposite side (right side in ⦠Because of financial problems, ArmaLite sold the AR-15 design to Colt. The M16 is a fully automatic weapon and it would be illegal to build one in the "US" - as I was careful to mention. Be the first to review âM-16 Drilling Jigâ Cancel reply. My post was not so much an answer to the OP but as a warning to members who may not be aware of the NFA that building a true M16 would not be a good idea. The select-fire AR-15 entered the US military system as the M16 rifle. Unless you are able to get the jig very secure, this size of drill will tend to vibrate and chatter in the hole. Perform a full depth finish pass to bring the pocket to its finished dimensions. 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