Lower parts kits for your AR-15 or AR-10 build normally include parts such as the safety selector, pivot pins, springs, pins, and even occasionally will include parts such as your grip and trigger assembly. The lower parts kit (LPK) is one of the most important parts of any AR build. The LPK includes all the parts necessary to chamber a round, flip the safety, squeeze the trigger, and fire a round downrange using your AR-15 lower. When you pick out one of the AR15 Lower Parts we carry, for example, one of the Aero Precision AR15 Lower Parts, you’ll get precisely what you’re expecting. But we strive to provide more than just awesome products and super low prices. We appreciate that a lot of the equipment in our store calls for some amount of practical experience to properly evaluate and understand.
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AR Lower Parts, Lower Parts Kits
UTG Model 4/AR15 Receiver Wedge
Fits Near Your Takedown Pin & Keeps the Upper Section Snug and Tight Against the Lower
Earn 2 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Armaspec AR-15 Red Gun Builders Kit Stainless Lower Parts Kit
Tired of getting all those extra parts inside a mil-spec lower parts kit that you’re just not going to use? The AR-15 Stainless Lower Parts Kit from Armaspec is set…
Earn 79 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
PSA AR-10 ACS-L 2-Stage Lower Build Kit w/Over Mold Grip
Included is everything you need to assemble your PSA PA10 Stripped Lower Receiver!
Earn 189 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Odin Works AR-15 Lower Receiver Parts Kit with Pistol Grip
The Odin Works AR-15 Lower Receiver Parts Kit is a complete 31 piece lower parts kit that includes all the parts needed to finish a lower receiver.
Earn 59 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
ARMASPEC AR 10 Builders Kit No Grip Or Trigger Stainless Steel Red
This ARMASPEC lower parts kit includes all the small parts you will need for your AR10 lower receiver. Made from quality stainless steel this kit has a higher corrosion resistance…
Earn 79 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Guntec AR-15 Builders Kit With Ambi Safety (Anodized Purple)
Guntec AR-15 Builders Kit With Ambi Safety (Anodized Purple)
Earn 89 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Spike’s Tactical .308 AR Livewire/Jack10 Lower Parts Kit without Fire Control Group Matte Black
Many times when building a new big bore rifle, the plan might be to use an upgraded trigger system. Well with this great kit from Spikes you get everything you…
Earn 39 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Luth-AR .308 AR Builders Kit Lower Receiver Parts Kit Matte Black
Luth-AR is the name to trust when it comes to purchasing high quality parts and accessories for your AR platform firearms. Using high quality parts is the best way to…
Earn 49 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Strike Industries AR-15 Enhanced Lower Parts Kits Without Fire Control Group Matte Black Finish SI-AR-E-LRPLT
The SI AR-15 Enhanced Lower Parts Kit is a high quality essential component in your next AR build. This kit is an enhanced kit which DOES NOT include a Trigger,…
Earn 49 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
CMMG AR-15 Complete Lower Parts Kit Black 55CA6C5
CMMG AR-15 Complete Lower Parts Kit Black 55CA6C5
Earn 69 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Armaspec AR-15 Gun Builder’s LPK without FCG and Grip Black
 Armaspec lets you have spare parts handy or get ready for your next build. Their kit is without the Fire Control Group (FCG) and Grip so you can get that…
Earn 74 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
ARMASPEC AR 10 Builders Kit No Grip Or Trigger Stainless Steel Purple
ARMASPEC AR 10 Builders Kit No Grip Or Trigger Stainless Steel Purple
Earn 89 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
UTG AR-15 Lower Upgrade Kit, Matte Black TLT-TKS01
The UTG® AR15 Lower Upgrade Kit comes in matte black and it is a perfect upgrade for your AR-15 Rifle because it features ambidextrous 45/90 safety selector and extended magazine…
Earn 74 Points -
AR AK Parts, AR Lower Parts, Gun Parts, Lower Parts Kits
Caldwell S&W M&P AR-15 Customizable Lower Parts Kit
When building a new AR-15, many builders opt to use upgraded pistol grips, fire control parts or drop in trigger systems, leaving them with unused parts. Caldwell recognizes the needs…
Earn 49 Points