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Anderson Manufacturing AR-15 Lower Parts Kit - Stainless Hammer and Trigger

Manufactured by Anderson Manufacturing
SKU: AM-556-LW-PARTS-KIT
MPN: G2-K421-A000-0P
Manufactured by Anderson Manufacturing
96 Reviews
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Details

Details

The Anderson Manufacturing AR-15 Lower Parts Kit is a high-quality and reliable choice for anyone looking to build or upgrade their AR-15. With its precision-machined parts and stainless-steel hammer and trigger, this kit is built to last and provide reliable performance.

Includes:
Bolt Catch, Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch Spring
Buffer Retainer, Buffer Retainer Spring
Disconnect, Disconnect Spring
Stainless Steel Hammer, Hammer Pin, Hammer Spring
Magazine Catch, Magazine Catch Button, Magazine Catch Spring
Pistol Grip (A2 style), Pistol Grip Lock Washer, Pistol Grip Screw
Pivot Pin, Pivot Pin Detent, Pivot Pin Detent Spring
Selector, Selector Detent, Selector Detent Spring
Takedown Pin, Takedown Pin Detent, Takedown Pin, Detent Spring
Stainless Steel Trigger, Trigger Guard, Trigger Guard Roll Pin, Trigger Pin, Trigger Spring

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Specifications

BrandAnderson Manufacturing
ColorBlack
Manufacturer.Anderson Manufacturing
Weight8 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

AWESOME LPK, especially with a few cheap upgrades

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I like everything about this kit.
STEAL at the sale price.

+ Stainless, well machined trigger and hammer.
+ Hammer is bobbed, so you can add a reduced power hammer spring and still get 100% reliable ignition, while reducing pull weight.

I had a bunch of Magpul MOE grips laying around I bought last year for 5 dollars each, a JPE reduced power enhanced reliability spring kit, and a 1/4-28" set screw with a shortened pistol grip screw.

I didn't even have to polish the engagement surfaces. After adjusting the trigger, installing the reduced power spring set, and installing the Magpul MOE grip, I have a KILLER trigger that breaks at 4 lbs with zero creep, and has a short reset....all for a total of 50 dollars!

I'm happy. This will be my go-to parts kit from here on out.

It just works.

by -

It's a cheap LPK that works perfectly well. Weight on the trigger is pretty good, a step up from mil-spec. Stainless trigger also looks super sharp on my AR pistol.

Best Buget Lower Parts Kit

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I have purchased a couple different brands of budget lower parts kits, and this is by far the best one. This was mounted on an Anderson lower and everything went together perfectly. No complaints so far.

Best Lower Parts Kit

by

Best lower kit of all I have used. Choose it when possible. Have created 12 different builds with this lower kit

Good item . . worth a try.

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Have used this kit in several builds and everything has fit great and has worked flawlessly so far. I have had no issues with this kit and the stainless trigger looks great with a black or a raw lower.

Best Mil-Spec-ish trigger group I've ever used

by

I love this LPK. I bought this kit because I was curious about the trigger and the hammer setup. The trigger is really nice with a crisp break and a short and very positive reset. I even like the bits that I didn't use in my last install, i.e. the bolt catch and the mag release and the safety. I will put those to use in my next beater rifle build. Overall super solid and I'm planning to get a few more of these the next time I see them on sale.

ANYONE WHO LOW RATES THIS KIT IS A ROOKIE

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All you wanna be gunsmiths on here whining about this lower parts kit have obviously not assembled as many lower receivers as you brag about. It’s easy to hide behind your keyboard and complain about the trigger pull, bolt catch button, poor coating, catch fail, pins won’t lineup, fits are too tight, fits are too lose, your mommy was at the grocery store, whatever. I’ve installed several of these particular parts kit and I can tell you right now this is a solid machined, nice functioning, excellent fit that works perfectly. Like everything else, you went to show off to your friends how awesome you are and couldn’t get it put together under the pressure of being watched which embarrassed you in front of your Xbox friends so you blamed the parts kit and stomped down to mommy’s basement to unleash the keyboard warrior within. Hahaha

Rough machining causing issue. Fix included.

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I ordered these parts for my first build. I gave them 2 stars because there was an issue with my trigger and hammer binding up together and now allowing the trigger to reset. This build was on an AR Pistol, so immediately I thought it was a gas, buffer, spring issue.
After I found others with the same issue online, it was apparent the the parts I received were poorly machined. I have since made the repairs to my fire control group and all is functioning as intended.

https://www.youtube.com/watch?v=Z-Cx6rt34ls

a well kept secret lpk

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4.5 lbs out of the box...don't understand one review here that was dissatisfied....I am quite pleased and will buy more!!thanks PA!!

Best budget improved trigger group

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It's no Timney trigger, but you're not paying for one here either. Very happy with the small amount of creep and crisp break. Much better than competetor's similarly smoothed trigger group. ALSO, went through 600 rounds of both brass and steel in one session and no light primer strikes. Gobbled up whatever I fed it. Rest of kit worked as expected. Placed it on a pistol build so the agressive texture on the pistol grip was welcome.