![]() Guess that'll teach me to mix and match components. With the new spring and detent it's pretty damned easy to remove and replace the Kingpin.Īlso, with the new spring and detent, it's also much easier to drop a mag with the bolt back. For scale, stock combo on top, Kingpin combo on the bottom As you can see, the Kingpin detent is about double the length of the original, while having a spring that's about 25% shorter. I have about 350 rounds through the AR and haven't had a malfunction yet, though I like the ability to do so.ĮDIT: After reading what u/aaples wrote: I went and replaced the stock (Juggernaut?) spring+detent with the one provided with the Kingpin. I don't know if the spring+detent that came with the Kingpin will makes this easier.Īll in all, I like the system, other than how annoying it is to replace the Kingpin after I remove it. Do note I use the detent and spring that came with the Juggernaut system. I don't know what black magic the AR Maglock dude performs to be able to insert the Kingpin back into the rifle toolless, with gloves, but I know I can't do it without a lot of swearing and an iFixit phone jimmy. The Kingping also does the same thing, but you pull the entire thing out and it's a bitch and a half to put it back. Unscrew the endcap, rotate, and pull to allow breakdown. In the context of just breaking down the rifle for maintenance, the Juggernaut is better. The Juggernaut is significantly larger, though the Kingpin is chunkier along the "thin" section. Size comparison (Kingpin top, Jugg pin bottom). I might also in the future reinstate the Juggernaut pin to see if it works better than it would before. This might easier as the metal-on-metal contact wears in. The AR Maglock guy does it effortlessly, while I have to apply some good force to the maglock to depress it, and I subsequently have to push the back of the maglock to get it to spring back. The Kingpin appears to a allow few more millimeters of clearance and it feels easier to drop the mag in the case of a malfunction. Feeling that too much of that could break it, I swapped out the Jugg pin for the Kingpin. ![]() However, when I tried to perform a simulated malfunction with some snap caps, I was just barely able to clear it by heavily pressing on the ARMaglock mechanism. For normal operation, it works flawlessly in that configuration. I installed the Gen 4 ARMaglock without changing out the Juggernaut pin. It supposedly allows mag drop even with a malfunction. ![]() Researched a bit, and got a AR Maglock Gen4 plus the Kingpin (also a Strike Industries bolt catch). You need to either pull the rear and front takedown pins to allow the maglock enough clearance to disengage and allow mag release, or you need to undo the bottom plate of the magazine to relieve pressure and allow the bolt to go forward. With the BCG pushed back because of the blockage, you can't crack open the rifle, and if you can't crack it, you can't drop the mag to clear the blockage. The considerable downside to the system is in the case of a malfunction, like a double feed or failure to extract. It's pretty fast, needing only one more button press to drop the mag, then a rack of the charging handle (since the Juggernaut maglocker replaces the bolt catch). Since it's maglocked, you get to keep all the yummy evil features like pistol grips and collapsible stocks. You tap the special rear takedown pin, the upper and lower crack, and then you can drop the mag. It came equipped with the Juggernaut Hellfighter maglock system. Not to long ago, I picked up my S&W M&P 15 Sport II. Some observations and critiques from a new gun owner.
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