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Description

What makes this stripped lower different? The answer is simple… the KE Arms KP-15 stripped lower receiver is a monolithic polymer AR-15 style lower receiver made from injection molded, 30% glass-filled nylon. Its unique design incorporates the buffer tube, pistol grip, trigger and a 13-inch (LOP) buttstock into the receiver as integral components. The result is an affordably priced, lightweight lower receiver.
The KE Arms KP-15 stripped lower receiver uses a carbine buffer and spring. The take down and pivot pins have built-in detents, which increases durability by eliminating the spring and detent holes. The buffer detent (should you choose to use it) is held in place with a 5/64” roll pin. The hammer pin area is wider for durability; standard AR-15 hammer pins can still be used, though the KE Arms longer hammer pin is recommended for customers preferring a flush pin for aesthetic reasons.
The safety selector spring and detent have been designed to load from the top, then the selector is slid over them. (Standard selectors can work but removing them can be particularly difficult. KE Arms recommends the use of their designated mil-spec selector or ambi selector to make removal easier. Follow the manufacturer’s assembly guide for further instructions.)
- Compatible with all Mil-Spec fire control groups
- Compatible with cassette style match triggers
- Flared magwell
- Available in black and flat dark earth
- MLOK Slots at rear of stock for sling attachment
- Pre-drilled in front for QD socket inserts
- Uses a standard bolt catch. Cannot accept the PDQ lever. The PDQ lever is exclusive to the WWSD complete rifle.
- Do NOT use anything other than standard carbine buffers and round springs or the JP SCSS in the KP-15.
WARNING!: This item is legally classified as a receiver. You Must be 21 years old to purchase this item and a resident of the same state your transferring dealer is licensed in.
Stripped Lowers Include
- Pivot and Take Down Pins
- KP-15 Selector Detent
- Buttplate
- 5/64" Roll Pin to Retain Buffer Detent
The KE Arms KP-15 is compatible with standard AR-15 uppers in calibers including .223/5.56mm NATO, .300 Blackout, 6.5mm Grendel and 6.8mm SPC. The lower receiver is also compatible with 9mm blowback systems, when used with a minimum buffer weight of 5.4oz (carbine). Failure to use a minimum buffer weight of 5.4oz can damage the lower.
CERAKOTE: If you intend to Cerakote your KP-15 the manufacturer recommends the bake should be done at low temperatures (
WARRANTY: The KE Arms KP-15 has a lifetime warranty for normal use. If the receiver breaks through misuse or neglect, KE Arms will replace it ONCE for $65.00.
NOTE: Not recommended for .458 SOCOM, .50 Beowulf or .50 BMG. Please contact KE Arms if you intend to register your KP-15 lower receiver as an NFA weapon.
Cartridge : 5.56x45 NATO
Finish : Anodized
Color : Flat Dark Earth
Make Model Fit : AR-15.Universal
Receiver Style : Stripped
Brownells sku: 100037286
MPN#: 1-61-01-007
UPC#: 050806113596

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Comments (6)

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$109 with free shipping at Tin Star vs. $116.04 at Brownells (at least for me at Brownells) + FFL.

0 votes
0 votes

Man I hate "Tupperware" in my rifles. Although there are many successful polymer pistols, i just dont have the same faith in high pressure and bigger caliber rifle. Thats simply my opinion and to each their own.

2 votes
3 votes

All the bang happens in the upper receiver, the lower simply holds everything that doesn't go bang.

5 votes
0 votes

If this was ONLY a poly lower, that might be true, but this kit also includes the buffer tube. People have reported issues with just poly lowers cracking where the buffer tube is held by the castle nut. That's kinda' "N/A" on this design, but the comments in several articles where people have noted that their lower cracked in other places would give me pause. I have never owned, nor tested, a poly lower - but I wouldn't personally trust my life to one based on feedback & issues I've read about.

Who knows though - this design may address those concerns.

The comments on this article have a few examples of people citing other types of failures:
https://blog.cheaperthandirt.com/polymer-good-idea/...

1 vote
6 votes

Suggest you go to YouTube & search for InRangeTV and look for their series of episodes on the "WWSD" ["What Would Stoner Do"(1)] rifle. They built that up around a similar all poly receiver and subsequently discovered it was out of production & wound up teaming up w/ the principal of KE Arms to develop & make their own improved version. Only thing it needs is a butt pad to extend the LOP [they intentionally went with the shorter LOP of the original M16, but being a LES customer, I'm quite happy w/ the LOP of the 'A2..]

(1) -- I always think of the WWSD as "What Would Sullivan Do," as any casual historian of the AR knows that Stoner had little truck w/ the .223Rem cartridge beyond being charged with its development and he handed off most of the scaling down of his beloved AR-10 to L. James Sullivan & the rest as they say, is history...

3 votes
0 votes

You do realize there is a universe of difference between a poly80 lower right and this right? KP15 is no way shape or form like a poly80 at all. Its a single giant single piece of polymer; grip stock buffer tube etc. are all one solid piece along with known weak points like where the buffertube begins being much thicker to add even more strength. The single piece design adds significant strength compared to a traditional poly lower.

6 votes
0 votes
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