A billet lower receiver normally is purchased because of it's cosmetic appeal. mil spec vs. non-milspec lower receiver debate to rest. These instructions are meant to give you some direction in completing your Optimus Defense 80% Lower Receiver. Trailer for an upcoming article on Firearms News. The 308 lower includes a hardcoat anodized Mil-spec finish. The NDS-604 "Retro" upper receiver . With a secure setup and proper tool speeds, you can cut a nice, smooth pocket that looks as good as the factory version. A forging on the other hand is a piece of billet that has been pounded into shape by a die on a forging press. Thompson M1A1 80% receiver blank with blueprints (Shipping$10.00) $300.00 each. 80% Arms Easy Jig Gen 2 Multiplatform AR-15 / LR308 80% Completion Jig This item is currently on order MSRP: $249.99 . That's already in a lot of the 80% lowers, and it's something that can't change in relation to the FCG, so it's a safe reference point. $99.99. Want to hit a target in the dark? This isn't to be confused with a rifle kit which includes every part to build an AR Platform firearm. The good news is the upper receiver and all the other parts are completely uncontrolled as if it was a receiver blank. This high-quality material was specified by the original M-16 manufacturing blueprints. Out of stock. A good video of this operation is available at the Juggernaut Tactical web site. The CNC jig takes all the guesswork out of finishing this project. After our parts have been cnc machined they are then taken to laser engraving if necessary and finally sent off to be coated. Let's look: The G150 Phoenix Polymer 80% Lower That's already in a lot of the 80% lowers, and it's something that can't change in relation to the FCG, so it's a safe reference point. ar-15 xxxxxx project: a 1/1 of 2 scale: sheet: rev: fractions: 1/16.x .030.xx .015.xxx .005 angular: .5 dimensions are in inches 3940 broad st. ste 7-329 slo, ca 93401 dwg. Many companies offer complete uppers which are ready to bolt on to your lower, or partially complete uppers that are in need of just a bolt carrier and a charging handle. I think most people tackle a project like this because they like making their own stuff. An AR15 80 lower is a receiver blank that is machined as far as you can without legally becoming a frame or receiver and would then require to be transferred to an FFL. One of the challenges of the past was finding a way to coat your 80 lower once you were finished milling the 80 lower. Finishing one of these receivers on my Grizzly Mill/Drill was not a big chore. The finished receiver pocket. I suggest you start with a 80% completed part and stick with the AR15 until you … Pins made onto side plates for easy locating. So, is an 80 lower made of "plastic" any good? AR15 Lower Receiver Blueprint PDF DOWNLOAD. 6 AR Lower Receiver Step-by-Step Chapter 1 In this book I will explain in simple terms just how I go about machining an AR15 lower receiver from a forging. Cosmetics aside, there isn't a huge difference between billet aluminum and forged aluminum other than price and freedom of design. $129.99. When choosing an 80% lower receiver for your next build, there are a number of factors to consider. The 80% AR-15 Lower Receiver started it all, this was the first commercially available receiver on the market and had a determination from the ATF saying it was not a firearm. Again, it really is a draw, there is no clear winner here. We have continuously expanded the option to add laser engraving to our products. JMT AR-15 80% Gen 2 Polymer Lower with Jig - Black (3-pack) $329.99 $229.99. The AR-15 was first built by ArmaLite as a selective fire rifle for the United States armed forces. Mil spec Hard Coat Anodizing is a great option and will match any of the ARs already in your collection and many of the parts purchased from other companies. OD Green Cerakoted Billet AR-15 80% Lower Receiver. I would rate finishing one of these receivers on a mill as well within the capabilities of any hobbyist with basic machine skills. Remember to follow all Federal, State and Local laws when building your AR15 80 lower. ar-15 xxxxxx project: a 1/1 of 2 scale: sheet: rev: fractions: 1/16.x .030.xx .015.xxx .005 angular: .5 dimensions are in inches 3940 broad st. ste 7-329 slo, ca 93401 dwg. JMT AR-15 80% Gen 2 Polymer Lower with Jig - Black (5-pack) $549.95 $379.99. Quality Made in America Parts to Build or customize your AR-15 Complete AR15 Rifle Kits – AR-15 80% Lowers – 80% Lower Jigs – Rifle Kits and More ADDRESS: 918 … Fits Our AR15, AR9, And AR-Single Shot Lower Receivers; Top plate for milling fire control pockets. The holes for the selector (3/8") and trigger and hammer pins (5/32") were drilled first and they must be precisely positioned for proper function of the fire control group. Also note that ownership of a DIAS and AR15 constitutes ownership of a machingun, please abide by the law and use these materials solely for educational purposes. You'll be taking most, if not all, keying off of the front pivot pin to get your front to back measurements and the exterior sides of the lower to find the center line. When selecting drill bits and end mills for your kit, be sure that they will work for milling and drilling the product you have. By far the most common way is to complete the 80 lower with a jig. Unlike many of our competitors, we machine the parts in-house, which gives us the ability to offer the most competitive pricing. trying to print now, but I want a poster size! The latest entrant grabbing attention is made from weapons-grade polymer, promising some unique benefits. Norcross says finishing an 80% receiver is not a challenging job, but care must be taken to properly position the drilled holes. Our jig was originally designed to be used with a milling machine and a drill press. this is the most useful post on r/guns ever. Our jig normally retails for about half of some of our competitors jigs. This is great news for the home gunsmith as it opens up your options on what you can purchase. Once the holes were done, it was simply a matter of milling out the receiver pocket with a long 7/16" end mill and finally cutting the slot for the trigger with a long 5/16" end mill. One error I made was not cutting the rear channel deep enough into the buffer tube threads, and when I checked the fit of an upper receiver the takedown pin wouldn't quite line up. $69.99. On an AR you will need the following tooling: The market has been trending towards purchasing 80 ar lower that have already been anodized black. The 80% AR-15 Lower Receiver started it all, this was the first commercially available receiver on the market and had a determination from the ATF saying it was not a firearm. If I were to pick a coating for the home gunsmith this would be the first choice. Forgings offer significant cost savings and no real drawback for the end user. 38. AR15 80% Lowers Tactical Machining's AR15 80 Lower, also known as an 80 AR lower, was the first on the market. The select-fire AR-15 entered the US military system as the M16 rifle. AR-15 - AR9 - AR Single Shot, Jig Set . Currently all 80% AR lower options from Tactical Machining are CNC machined from 7075-T651 Aluminum Cerro forgings. Check your measurements. If you want to simplify your purchase, check out our 80% Build kits. Cerakote is the trendy coating right now and can be applied at home or before your lower is machined. RifleConnection.com offers high quality Firearm 3D CAD Models and Blueprints of firearms and firearm components. A lower parts kit will not even fit in an 80% Lower until it has been machined into a complete firearm. Some forgings are designed for companies and include those features like the flared magwell as well. This drawing has the dimensions for manually machining the final operations (completing and making it a firearm) of the Optimus Defense AR-15 Lower. Out of stock. Some jigs, like the 5D Tactical jig have extremely specialized end mills used in their system and require you to use their end mill. These changes generally are not possible for the casual AR builder to copy. Other jigs use very generic tooling, I recommend sticking with what the manufacturer of the jig kit recommends or finding a very similar replacement. |
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