LPKs for the Noob

[jsx1043]

Howdy all,

I’m building an AR pistol and am looking to the INGO tribe for some input. Here’s the list of what I have:

-Complete upper with BCG
-New Mfr “empty” lower, not stripped, just no LPK installed
-BCM grip
-SB PDW brace

It's my understanding that I need a standard carbine buffer spring and weight, a trigger guard and a LPK to get operational (cool accessories notwithstanding).

Now, as long as my supposition is correct above, here is the main question: What should I be looking at for a LPK?

-I don’t want/need a “match” trigger, but I’m open to improvements over a stock trigger.

-I’m cheap, but prefer high-dollar [STRIKE]women[/STRIKE] guns; what’s the best bang for the buck out there for these components?

-I’m seeing packages ranging from $20 for 15 pieces, to kits that are $100+ with 337 pieces. What the hell do I NEED?


This is my first build that’s required tools, so I’m in new territory. I appreciate all the forthcoming input and sharing of information.

 

[sig1473]

Get this:
Lower Parts Kit - Enhanced - SIONICS Weapon Systems
Or this:
https://algdefense.com/complete-lower-parts-kit-with-qms-trigger-536.html

 

[jsx1043]

Get this:
Lower Parts Kit - Enhanced - SIONICS Weapon Systems
Or this:
https://algdefense.com/complete-lower-parts-kit-with-qms-trigger-536.html

I like the Sionics kit... What's your reasoning on suggesting those?

 

[Vigilant]

BCM makes what I think is the best “budget” LPK at a hair over $100 with the PNT trigger group.

 

[sig1473]

I like the Sionics kit... What's your reasoning on suggesting those?

I've used both and both are extremely quality kits. I don't skimp on anything nowadays as there is no reason to when it comes to ARs.

 

[usmcdjb]

A lower parts kit normally comes with everything to complete a lower except for the buffer tube, buffter spring, castle nut and stock. Somewhere around 31 pieces if I'm thinking right. Includes pistol grip, trigger, hammer, pins, springs, detents, etc.

What Your AR-15 Lower Build Needs

When I started building, I used to go budget all the way. With the goal of having an AR for as little as I could. But on occassion I had issues with parts not fitting so well, and found that I prefer to pay a little more for the LPK. Plus I don't want the standard pistol grip, trigger guard and trigger. So, I buy kits that don't have them, and then get what I want.

I like the small parts kits from Wilson Combat, and have used ALG Defense small parts kits as well. Never wanted a super high dollar trigger, but got Spikes Battle Triggers a time or 2. But do like the QMS and ACT triggers from ALG Defense. Something a little better than a milspec unit without breaking the bank.

Some other places I've grabbed parts are Toms Tactical, Schuyler Arms, Rousch Sports, Ballistic Advantage, Aims Surplus. Should be able to locate those with a google search.

 

[jsx1043]

Great, thanks for the responses guys. My first AR was built on a complete Stag lower so this is new to me. Since I’m building this one with more pieces/parts, I’m trying to invest a little more for some quality components, without trying to break the bank.

This new lower is a Spike’s, so I’m not anticipating too much trouble.

 

[PGRChaplain]

Brownells has some good Assembly Videos on YouTube.

 

[Trigger Time]

Great, thanks for the responses guys. My first AR was built on a complete Stag lower so this is new to me. Since I’m building this one with more pieces/parts, I’m trying to invest a little more for some quality components, without trying to break the bank.

This new lower is a Spike’s, so I’m not anticipating too much trouble.

If you need to borrow any tools hit me up

 

[1stLast&Always]

When you put pins with springs in, make sure you're working inside a box or a very small area with a sheet or something covering the floor. If one of the pins pops you could lose the spring and the detent pin. I did mine in the shower stall with the door closed, and the drain covered, which is good, because that happened. You can buy a tool to help with the process or use a clevis pin instead. Someone here probably has the right tool. AR builds can be fun, but there's no feeling like losing a part you waited a week for it to come in. I definitely watched a lot of assembly videos but first two times just cheap parts kits and upgraded to better grip or trigger later.

 

[jsx1043]

Yeah, My boy Trigger Time already offered to let me borrow some tools - and I know when I need to let the pros handle it! I plan on dropping off the project to an armorer buddy so I know it gets done right...

And TT helped me out with a buffer assembly so all I need is the LPK now. The search continues!