AR Lower Parts Kits

Build or upgrade your AR with our complete lower parts kits. Featuring high-quality triggers, springs, detents, and controls, these kits provide everything you need for a reliable and smooth-functioning lower receiver. Get your AR build started today!

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Orders Over $400

AR Lower Parts Kits

CMC Triggers

CMC AR-15 LPK WITHOUT GRIP/FCG

Original price was: $39.99.Current price is: $39.00.

AR Lower Parts Kits

CMMG

CMMG LPK 556 WITHOUT GRIP/FIRE CONTR

Original price was: $39.95.Current price is: $39.00.

AR Lower Parts Kits

Rise Armament

RISE LOWER PARTS KIT

$44.99

AR Lower Parts Kits

CMMG

CMMG LPK 308 WITHOUT GRIP/FIRE CONTR

Original price was: $49.95.Current price is: $48.00.

AR Lower Parts Kits

Sons of Liberty Gun Works

SOLGW BSK BLASTER STARTER KIT

$57.00

AR Lower Parts Kits

CMMG

CMMG LPK 556 BLK

Original price was: $69.95.Current price is: $67.00.

AR Lower Parts Kits

Armaspec

ARMASPEC SPR LT GUN BLDRS KIT RED

Original price was: $79.99.Current price is: $75.00.

AR Lower Parts Kits

Armaspec

ARMASPEC SPR LIGHT LPK 223/556 BLK

Original price was: $84.99.Current price is: $79.00.

AR Lower Parts Kits

Spikes Tactical

Spikes Tactical SLPK101 Lower Parts Kit Multi-Caliber Black Oxide Stainless Steel AR-Platform

Original price was: $85.00.Current price is: $82.00.

AR Lower Parts Kits

CMMG

CMMG LPK 308 BLK

$82.00

AR Lower Parts Kits

Armaspec

ARMASPEC AR10 GUN BUILDERS KIT BLK

Original price was: $95.99.Current price is: $90.00.

AR Lower Parts Kits

Troy Industries

TROY LPK 556 BLK

Original price was: $140.00.Current price is: $90.00.

AR Lower Parts Kits

Daniel Defense

DD LPK 556 BLK

$124.00

AR Lower Parts Kits

CMMG

CMMG ZEROED LPK MK3

$138.00

AR Lower Parts Kits

CMC Triggers

CMC AR-15 LPK W/FLAT TRIGGER

Original price was: $249.00.Current price is: $237.00.

AR Lower Parts Kits

CMC Triggers

CMC AR-15 LPK W/CURVED TRIGGER

Original price was: $249.00.Current price is: $237.00.

AR Lower Parts Kits

Armaspec

ARMASPEC SPR LT LPK 223/556 RED

Original price was: $84.99.Current price is: $79.00.

AR Lower Parts Kits

BATTLE ARMS DEVELOPMENT

BAD ENHANCED LPK MOD3

Original price was: $35.00.Current price is: $33.00.

AR Lower Parts Kits

San Tan Tactical

SANTAN AR15 LPK W/O GRIP/TRIGGER

Original price was: $40.00.Current price is: $37.00.

AR Lower Parts Kits

Sharps Bros

SHARPS AR15 LOWER PARTS KIT NO FCG

$38.00

Elk River Guns

4.7

Based on 102 reviews

review us on

Joyce Treulieb

22:34 05 Jun 25

Amazing!

Michael Kusy

20:21 03 Jun 25

Always a great experience at Elk River Guns!

Jeff Von Almen

22:21 20 May 25

David was great!

Jarrod Raper

21:38 19 May 25

Staff helps with every step of the process and make sure you know what is going on! They are super informative. Great people.

Timothy Moorehead

19:56 17 May 25

Always helpful and good stock!

Stephen Failla

16:56 13 May 25

Dan Emert

15:20 12 May 25

These folks run an impressive operation and are great at everything they do. Highly, highly recommend.

Joel Harris

22:07 09 May 25

Friendly helpful & very well informed. Competitive pricing.

David Smith

17:30 07 May 25

Just got another brick of Hornady 17 HMR 15.5 gr. NTX. It gives exceptional accuracy at 100 yards, is devastatingly lethal on ground squirrels, and doesn’t poison the raptors.

DAVE MIHAICH

19:31 04 May 25

Always a pleasure at Elk River Guns!!👍🏻

Dakota Thvedt

11:02 03 May 25

Alan Clemens

23:02 02 May 25

Great and friendly service as always!

Eric Edelstein

22:33 17 Apr 25

Danny Hulslander

23:13 15 Apr 25

I've had nothing but good experiences with these guys!! Whether it's buying a new firearm, getting some gunsmithing done or selling/trading in a used firearm, they make it an easy and welcoming experience! Thanks guys!

Bob Forster

19:40 09 Apr 25

Great service. Jae made some great recommendations. Very happy with resuling product purchased.

Kasen Brennise

18:13 08 Apr 25

lawrence Belton

13:37 01 Apr 25

Heath Scroggs

00:19 27 Mar 25

Everyone was really excited to help one out!! An amazing environment!!

Mikey DeRock

22:40 25 Mar 25

Everything in house seems to be awesome, staff is friendly and helpful, you could sit and talk to everyone for far too long!Waited a bit too long getting a barrel threaded, but that is not done in house and by a sub contractor.Everything in house from customer service to selection was wonderful, I will be bringing my buisness back again!

Frances Jenkins

01:34 19 Mar 25

Very friendly and extremely knowledgeable staff.

Juan Landa

18:02 10 Mar 25

Wonderful service and great people!

Ron Mentch

22:33 07 Mar 25

Very friendly and helpful!

Sharon Cantu

00:17 02 Mar 25

Friendly & kind , Great customer services . Took the time to explain their products to me . Recommend for everyone to go check them out. Thank you for all your help .

Dave Chapin

21:51 28 Feb 25

As always, great service, very happy with my purchase. Definitely my go to store for anything gun related. Thanks elk river!

Jeff Jewson

04:39 28 Feb 25

Cannon Balls

23:23 27 Feb 25

Best store in town. Knowledgeable Smart people. Best store in Colorado as far as I know.

Donna Segale

22:14 22 Feb 25

I needed to get rid of these guns my husband had that I discovered after he passed. I am not used to being around guns and a bit nervous around them. Everyone at the store were very nice and gave me a fair price for them. The 2 dogs were also sweet.I would highly recommend them.

Scott Baraw

04:06 22 Feb 25

Elk River Guns is like family! They are knowledgeable and understanding for all your gun related needs. Jae the owner is willing to go the extra mile to make sure you are happy with your purchase/future purchases. Dave has impeccable memory. He remembers everyone’s name and welcomes you by name with a warm smile when you walk through the door. Other shops employees just want to take your money any way how. These guys are there to make your day better. They are my number one gun store in my books.Best in the northwest!

Chris H

23:22 13 Feb 25

Jae and Elk River was my go to FFL before I moved away from Steamboat. Just bought a few products from them even though I now live across the country. Elk River was responsive, shipped my product quickly in a well packaged box. Transaction was seamless. Will continue to do business with Jae and Elk River Guns.

Ralph Torres

23:09 12 Feb 25

Very knowledgeable employees in this store ifthey don’t have it. They will order it for you. I’ve never had a bad experience with elk River guns

C Young

07:55 24 Oct 24

Can’t recommend them enough. A lot of gun shops have shady salesman or condescending staff, and it’s the opposite here. David (Mr. Smith) is just the most welcoming warm person to have greet you and guide you through any of your needs. He’s downright hilarious too! Jae is the wizard you can trust with all your gunsmithing needs and is obviously effortlessly knowledgeable with any and everything guns. He has both fixed my broken handgun and mounted an optic within 10 minutes of walking in the store while charging a very fair price. Just crazy levels of service that’s so rare nowadays. Tip this man he deserves it. They have a great selection of guns/parts and transfers, though on the expensive side for transfers, (you’re in steamboat, don’t be unrealistic), are a breeze. In small towns like this we are lucky to have shop of this caliber (pun intended).

The best damn gun shop in Northwest Colorado!
You can be sure – “We treat you right”

Elk River Guns
1320 Dream Island Plaza
Steamboat Springs, CO 80487

AR Lower Parts Kits

Filter Options

FREE SHIPPING

CMC AR-15 LPK WITHOUT GRIP/FCG

CMMG LPK 556 WITHOUT GRIP/FIRE CONTR

RISE LOWER PARTS KIT

CMMG LPK 308 WITHOUT GRIP/FIRE CONTR

SOLGW BSK BLASTER STARTER KIT

CMMG LPK 556 BLK

ARMASPEC SPR LT GUN BLDRS KIT RED

ARMASPEC SPR LIGHT LPK 223/556 BLK

Spikes Tactical SLPK101 Lower Parts Kit Multi-Caliber Black Oxide Stainless Steel AR-Platform

CMMG LPK 308 BLK

ARMASPEC AR10 GUN BUILDERS KIT BLK

TROY LPK 556 BLK

DD LPK 556 BLK

CMMG ZEROED LPK MK3

CMC AR-15 LPK W/FLAT TRIGGER

CMC AR-15 LPK W/CURVED TRIGGER

ARMASPEC SPR LT LPK 223/556 RED

BAD ENHANCED LPK MOD3

SANTAN AR15 LPK W/O GRIP/TRIGGER

SHARPS AR15 LOWER PARTS KIT NO FCG

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