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I did some work on my AR-15s a couple days ago.

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Big Frank:
I replaced the rear sling loops with Ace Ltd. Push Button QD Sling Swivel Sockets from DoubleStar, and put Grovetec 1.25" Heavy Duty Push Button Swivels on. The loops on these are way thicker than the swivels from Advanced Tactical I just put on my 10/22. I had to cut a square notch in the M4 carbine stock because I didn't buy the QD swivel stud adaptor that someone else makes just for it. And I replaced the stock trigger guard on the DPMS with a JE Machine Tech anodized aluminum Advanced Operator Over-Sized Trigger Guard, but I haven't switched the Colt trigger guard out yet. That one's still setting here on my desk. You get solid aluminum for the price of a plastic MOE Enhanced Trigger Guard. They're 13 bucks cheaper than an Aluminum Magpul Enhanced Trigger Guard. That's the budget-friendly type of thing I seek out when possible.

I replaced the trigger group on the DPMS with a drop in Rise Armament Rave 140 3.5 lb. Pull, black, curved trigger with Anti-Walk Trigger Pins. It has ZERO take up, and is possibly the best trigger you can get on a $150 budget. I replaced the selector lever with a Rock River Arms Star Safety Selector to match my Colt AR-15. It also allows you to rotate the lever to any of the FOUR positions of the M16A2 Enhanced Rifle trigger group. That has a 3-round burst PLUS a full-auto giggle switch for twice the fun. ;D ;D I swapped out the Badger Ordnance Gen I Tactical Latch (The original charging handle enhancement!) for a Strike Industries Charging Handle Extended Latch. I have a Yankee Hill Machine TACTICAL CHARGING HANDLE LATCH I'm going to put on instead, because I just checked it's a little bit longer. Then I'll put this one on the Colt.

Whenever I find the extra selector lever spring(s) I bought, I'll put a new grip on the Colt. I know I bought 2 springs because the lever rotates way too easily, and I already found a new detent I bought for it. But I have boxes of parts in 2 rooms here, with other stuff piled all over the place.  My Vortex mount should be here early in the afternoon, but I think I'll wait until I swap uppers before I use that to mount my Vortex scope. Maybe sometime this winter.

https://doublestarusa.com/umpb-ars-push-button-sling-swivel-socket-for-a1-a2-m4-stocks-a200.html

https://grovtec.com/collections/push-button-swivels-qd

https://jemachinetech.us/ar15-m4-advanced-operator-over-sized-trigger-guard/#topOfPage

https://risearmament.com/product/rise-armament-rave-140-curved-trigger/

https://www.badgerordnance.com/tactical-latch-gen-i-249-02.html

https://www.strikeindustries.com/si-ar-latch.html

https://yhm.net/accessories/ar-15-replacement-parts/tactical-charging-handle-latch/

Big Frank:
Here's the Vortex scope and mount on the newest upper I bought. I can't remember where I bought it, but it's an M16A4 type flattop without feed ramp cuts. The Windham Weaponry flattop upper I bought with M4 feed ramp cuts wouldn't work with my original Colt AR-15A2 barrel. I never got around to returning the upper and now WW is out of business, so I'm going to use that one with my Can Cannon, instead of the X-Products billet upper it came with. I'll either toss that in the trash, save t for a spare, or sell it if anyone wants it. I should have bought the Vortex mount with a 2" offset instead of the 3", but didn't measure anything before I placed my order. They were the same price, but I don't need the extra inch and it should weigh a bit less. Vortex lists the weight as 6.7 oz, but doesn't specify which one that is. I believe it's the 2". This is the Sport Cantilever 1-Inch Mount. It has 4 Allen screws instead of 2 hex head nuts like the Pro Extended Cantilever 1 inch Mount. That's one reason it's $179.99 MSRP, instead of $224.99. The Sport mount puts the scope 0.15" higher. The Center Scope Height is 1.59 inches instead of 1.44".

Big Frank:
I put the Yankee Hill Machine charging handle latch on the AR-15 with the scope, since it's a little bit longer. And put the Strike Industries latch on the other one which has a 12.7" barrel on it at the moment. The YHM latch is steel, and the SI latch is aluminum that won't wear a hole in the upper.

Big Frank:
Here's the QD socket I should have bought to fit the M4 carbine stock. It's actually made for it, and it's cheaper, but is probably longer, and the swivel sticks out far enough past the butt already. But the other one looks better to me, and I didn't want to place 2 separate orders from 2 different places to get one of an A2 stock and one for a carbine stock. Besides, I forgot who made it.  :)  Windham Weaponry's website is up again. Maybe they didn't close like all the gun industry sources and media personalities said. Maybe they're going through a bankruptcy. Who knows? Not me.

Big Frank:
Grovetec also makes a AR Buttstock Limited Rotation Push Button Base for 12 bucks but it looks a little longer than what I used. I took the ERGO Grip off my 20" rifle and put a Strike Industries AR Overmolded Enhanced Pistol Grip on. It comes in 15, 20 and 25 degrees, and I have the 15 degree grip. The shallower angle should work well in the prone position. It costs $5 more than their Enhanced Pistol Grip that's not overmolded. The Strike Pistol Grip Plug Tool Holder Insert isn't compatible with the overmolded grip, or I would have bought it.

The ERGO grip was really comfortable but I had a problem with mine. If felt like the selector lever spring was binding in the hole. I tried reaming the hole out a tiny bit, but may have drilled it deeper. There was way too little tension on the selector lever. I put the Rock River Arms Star Safety Selector on to match the other gun, and replaced the spring and detent when I changed the grip. I took the old detent and stuck it in the ERGO grip point down and pushed it down with a punch, and it went down and out the side of the grip. Then I threw the grip away.

I also installed a Rise Armament Rave 140 Drop-in Trigger, 3.5lb. Pull with Anti-Walk Trigger Pins, black, with curved trigger in the rifle. The carbine has a JARD AR Two-Stage Trigger Kit. It's non-adjustable, but you can order them with 2 - 4.25 lbs. pull weight with a regular spring, and 4-4.5 lbs. with a heavy hammer spring. They make 7 different kinds of AR triggers including a set trigger. It's the only set trigger made for ARs. It features a single stage regular pull weight of 3-4 lbs. But unlike any other AR trigger on the market, it also features a set function that allows the user to push the blade of the trigger forward to the set position, reducing the pull weight to just 13 oz.

I have a Magpul MOE+ Grip on the other AR. That one has a Magpul MOE SL Carbine-Length Hand Guard on the 16" barrel, so the grip matches. The MOE+ Grip is also overmolded, and costs $4 more than the MOE (Magpul Original Equipment) grip. That's what MOE stands for if you didn't know, and SL is Slim Line. The Magpul MOE+ Grip only comes in a 25 degree angle and costs a dollar more than the Strike Industries AR Overmolded Enhanced Pistol Grip. The MIAD/MOE Bolt & Firing Pin Core and MIAD/MOE CR123A Battery Storage Core won't work in the overmolded MOE+ Grip, but the MIAD/MOE AA/AAA Battery Storage Core and MIAD/MOE Lube Bottle Core should work. I ordered the latter and it includes a 1/2 oz reusable lube bottle.

I put a Midwest Industries Tactical Light Mount on the 12.7" barrel and have the sling mounted on the right side with a QD swivel. On the left side is a free Harbor Freight 3-1/2 in. LED Mini Flashlight. It has 9 LEDS and runs off 3 AA batteries. I have serious lights for serious guns, but that light's just a placeholder until I decide I want to put one on the good ones on. It's on the left side so I can hit the button on the tailcap with my thumb.

https://grovtec.com/products/lr-ar-buttstock-push-button-base

https://www.ergogrips.net/product-category/gun-parts/ar-15/grips-ar-15/

https://www.strikeindustries.com/products/ar/lower-parts-kit/pistol-grips.html

https://magpul.com/firearm-accessories/grips.html

https://risearmament.com/product/rise-armament-rave-140-curved-trigger/

https://jardinc.com/ar-triggers

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