![]() ![]() If the receiver lacks a buttstock, stand it on the rear flat. Learn More: How-To Trick Out The AR-15 Trigger The locking edge is so rounded it’s a miracle it worked at all. The mag catch on the right kept dropping magazines, and it’s no wonder why. The detent and spring are now trapped in the receiver. When these have been compressed far enough for the installation tool to turn, rotate it a quarter-turn. Use the punch to compress the detent and spring. Push the spring through the hole, into the receiver. Use the tool with the bored hole in the lower receiver pin holes. Insert the assembly tool into the receiver takedown holes from the left side. Sinclair AR-15 Punch Kit $19.95 Brownells AR-15 Lower Punch Set $65.99 Assembling the AR-15 Lower, Front Takedown Pin Starting from a bare receiver, you’ll need the spring and detent, front takedown pin (the front has a flat on the side of the pin head) a 1/8- or 3/32-inch drift punch and the assembly tool. Installing or removing the front takedown pin takes a bit of fussing. It's usually best to leave a large head upper and lower assembled as a set. But it is really not worth it unless you are really stuck with one due to local laws. That is, a large pin and the other a small pin. It is possible to use adapter pins to fit the mismatch together. To disassemble the Colt large pin upper, you need a pair of large blade screwdrivers. The head of the large pin and the screw-thread bolt are slotted for screwdrivers. The large pin does not use a spring and plunger, but instead is drilled and tapped on the end to the left side of the receiver. The center of its pin hole is offset from that of a regular small pin. (These were made from the early 1970’s to the early 2000’s.) This pin is 5/16 inches in diameter, or nominal. That way you can have just the parts you need, for the task at hand.ĬMMG Lower Parts Kit $68.99 Ī long time ago, in a galaxy far, far away, Colt manufactured AR-15 rifles for the non-military market with the infamous “large pin” in the front position. To allow the upper to be removed, the groove is closed on each end so the pins do not leave the lower when they are pressed out.ĬMMG packs their AR-15 lower parts kits in color-coded plastic bags. The depressions keep the pin in place when fully opened or closed. The groove has two small depressions at each end. These have grooves machined into the side where the detent pin rides. The thick head pin is the front, flat head the rear. The dual push pin system of the M16, including the AR-15s that fit them, use nominal 0.250 inch diameter pins with machined heads. The rear takedown pin must be in place as you install the stock, there’s no way to go back and do it after the stock is on. I’m not a big fan of ambidextrous triggers, simply because my trigger finger tends to rest in the space occupied by the offside lever on such a design. The safety comes in your choice of regular or ambidextrous. You can invest in a standard AR-15 lower parts kit (also known as the LPK) or a premium trigger set. Assembling the AR-15 lower shouldn't cause a brain cramp, but there are a few tricks to make certain it doesn't rattle like a jalopy. ![]() Leave it alone and build on something else. This is one of the Colt rifles with the two-headed hydra takedown pin.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |