AR15/M16 Lower Parts

2 FOR $15 Pack CARBINE LENGTH Chrome Silicon Recoil Buffer Spring, AR-15 M4

Sale

2 FOR $15 Pack CARBINE LENGTH Chrome Silicon Recoil Buffer Spring, AR-15 M4

$15.00$24.95

Two (2) CountFor AR-15 / M4 Carbine:Made in the USA and 100% quality inspected by hand for proper fu..

2 FOR $15 Pack RIFLE LENGTH Enhanced Chrome Silicon Recoil Buffer Spring, AR-15/M16/A2

Sale

2 FOR $15 Pack RIFLE LENGTH Enhanced Chrome Silicon Recoil Buffer Spring, AR-15/M16/A2

$15.00$24.95

(2) Count Rifle Length Recoil Spring• Constructed from certified USA made chrome silicon sprin..

4pc Kit, ECS Buttstock, Spring, Tube, Nut- Comm Coyote/FDE

Sale

4pc Kit, ECS Buttstock, Spring, Tube, Nut- Comm Coyote/FDE

$79.95$125.95

Enhanced Combat System Buttstock Kit Includes:1 x ECS Buttstock, Commercial Spec, Battery Stor..

AR15/M4 Kit, LPK Lower Receiver Parts, AR-15 Semi-Auto, w/o Pistol Grip and Trigger Guard

$65.95

AR15/M4 Lower Parts Kit26pc Kit Includes:Buffer RetainerBuffer Retainer SpringDisconnectorDisconnect..

Sale

AR15/M4/M16 Kit, 36pc Small Parts Pack

$16.95$34.95

Small Parts Pack for AR15/M4/M16 PlatformsAll Parts Made in USA1 Delta Slip Ring Spring1 Delta Snap ..

Spring, Recoil Buffer Rifle, AR15/M16, Stainless

$4.95

RECOIL SPRINGFits M16, M16A1, M16A2, M16A3, M16A4. For use with a full size M16 Rifle buffer and f..

Swivel Mount, Add on Ambi QD Socket USGI M4/M16/M14 Style Stocks

$24.95

Add-on Ambi Quick Detach SocketReplaces government and OEM sling loop on rifle and carbine buttstock..

2 Pack Combo CARBINE & RIFLE LENGTH, Enhanced Recoil Buffer Springs, AR-15/M4/M16/A2

$19.95

This 2 pack includes:(1) Carbine Length Enhanced Buffer Springs(1) Rifle Length Enhanced Buffer Spri..

5 Pack CARBINE LENGTH Chrome Silicon Recoil Buffer Spring, AR-15 M4

$39.95

Five (5) Count of SpringsFor AR-15 / M4 Carbine:Made in the USA and 100% quality inspected by hand f..

5 Pack RIFLE LENGTH Enhanced Chrome Silicon Recoil Buffer Spring, AR-15 M16 A2

$39.95

Rifle Length Recoil Spring for Fixed Rifle Stock AR15 & M16 (A1-A4)FIVE (5) Count• Constructed f..

AR-15//M4 2pc Buffer & Stainless Steel Carbine Spring Combo

$16.95

AR-15/M4 2pc Buffer & Spring ComboCarbine Standard Buffer, 3oz PinnedCarbine Length Stainl..

AR-15/M4 2pc Carbine Buffer & Enhanced Chrome Silicon Recoil Spring Combo

$25.95

AR-15/M4 2pc Buffer & Enhanced Spring ComboCarbine Standard Buffer, 3oz PinnedEnhanced Chr..

AR15/M16 Buffer, Recoil, Rifle

$19.95

AR15/M16 Style Platforms, Rifle Length Fixed StocksRifle-length buffer 7075 T6 Aluminum Made to mili..

AR15/M16 Fixed Stock Extension, Receiver, Rifle Length, Buffer Tube

$32.95

AR15/M16 Style Platforms - Works with Rifle Length Fixed StocksRifle Length Buffer TubeMil-Spec 6061..

AR15/M4 Quick Detach Socket Receiver End Plate, Thin Profile, Aluminum

$19.95

Our thinnest and lightest AR15 Platform End Plate with Quick-Detach Socket Same profile as the stand..

AR15/M4 Receiver TRI-End Plate, Quick Detach, Billet Aluminum

$39.95

AR15/M4 Receiver End Plate w/3 Attachment SocketsPrecision machined from 6061 T6 AluminumMil-A-8625 ..

Buttstock, USGI M4 Adjustable Carbine Sliding w/ Sling Loop, w/QD Mount, Mil-Spec, Black

$39.95

AR15 M4 USGI Sliding Buttstock Assembly Black Molded Polymer Construction, BlackAdjustable, Fit..

LPK Kit, Lower Receiver Parts, AR-15/M4 Semi-Auto, w/o Fire Control - 18pc

$48.95

AR15/M4 Lower Receiver Parts Kit W/O Hammer/Trigger/Disconnector18pc Parts Kit Includes:SelectorSele..

Pistol Grip, ECS, Coyote Tan/FDE AR15/M4

$4.95

Enhanced Combat Systems (ECS) Grip* Classic A2 style* Also available in multiple colors* Made in USA..

RIFLE LENGTH Enhanced Chrome Silicon Recoil Buffer Spring, AR-15/M16/A2

$12.95

• Constructed from certified USA made chrome silicon spring wire• Heat treated, stress relieved• Pro..

2PC AR15/M4 Quick Detach End Plate & Swivel Combo - Choose Swivel

$32.95

AR15/M4 Combo Kit Includes: Receiver End Plate, Billet Steel, Black OxideQuick Detach, Push But..

2Pc Combo A2 Pistol Grip & Adjustable Sliding Buttstock w/Loop, OD Green AR15/M4 Carbine

$45.95

2Pc Combo Kit Includes:M4 USGI Sliding Buttstock Assembly w/fixed Sling Loop* AR15/M4* Mil-Spec M4 C..

2Pc Combo A2 Pistol Grip & Buttstock, AR15 M4 Carbine W/QD Mount, Mil-Spec, Black

$44.95

2PC Combo Includes:-M4 USGI Sliding Buttstock AssemblyBlack Molded Polymer Construction Adjustable,..

2Pc Combo, Pistol Buffer Tube w/ 1" Oval QD Swivel

$41.95

Combo Includes: 1.190" OD Pistol Buffer Tube, machined from 6061 billet, hard-coat anodized to Mil..

3pc AR15/M4/M16 Kit, 90˚ Ambi Selector Assembly

$39.95

Our 90° ambi selector allows safe/fire manipulation on both sides of the receiver.Precision machin..

5pc Kit, AR15 M4 Enhanced, Complete Receiver Extension, Chrome Silicon Spring, QD End plate, Castle Nut

$69.95

AR15/M4 Kit Includes: Mil-Spec receiver extension (6 position) 7075 aluminum, Hardcoat AnodizedBlack..

5pc Kit, Complete Receiver Extension, Mil-Spec AR-15 M4 Carbine

$49.95

AR15/M4 Mil-Spec Dimensions, made in the USA.Kit includes:• Mil-spec receiver extension (6 position)..

5pc Nickel Teflon Parts Kit AR15 M4 M16 5.56/.223

$12.95

Nickel Teflon KitAR15 M4 M16 (A1-A4) 5.56/.223 Compatible Parts Kit Includes:1- Cam Pin1- Selector D..

5pc Rail Cover Kit & Pistol Grip Combo Coyote Tan/FDE

$24.95

5pc Combo Includes:Enhanced Combat System Rail Cover kit for 1913 Style RailsSnap-on/off Installatio..

6pc AR15/M4/M16 Takedown & Pivot Pins & Springs Kit

$8.95

6pc AR15/M4/M16 Compatible Kit Includes:1 Takedown Pin1 Pivot Pin2 Springs (Takedown & Pivot Pin..

Sale

8 Pcs Kit, Complete Buttstock, M4 Telescoping, Mil-Spec

$49.95$95.95

Mil-Spec, made in the USA.Kit includes:• M4 telescoping buttstock w/Quick Detach Ambi Socket• Mil-sp..

9pc OD Green Buttstock Pistol Grip Kit M4/AR15

$103.95

Kit includes:M4 telescoping buttstock w/Sling Loop in OD GreenA2 Pistol Grip in OD GreenPistol Grip ..

AR15//M4/M16 Standard Trigger Guard

$8.95

AR14 M4 M16 Standard Trigger Guard with pinMil-spec dimensions 7075 Aluminum, Hard coat anodize, Typ..

AR15/M16 Rifle Length Buffer Kit, Mil-Spec with Stainless Steel Spring

$54.95

AR15/M16 Rifle Length Buffer Kit - For Fixed StocksKit Includes: Rifle-Length Receiver Extension/Bu..

AR15/M16 Rifle Length Buffer Kit, w/ Enhanced Chrome Silicon Spring Upgrade

$59.95

Kit Includes: Rifle-Length Receiver Extension/Buffer Tube Mil-Spec 6061 T6 Aluminum with a hard ..

AR15/M4 5pc Pistol Buffer Tube Kit w/QD Socket, 1.19" OD, Black

$74.95

AR15/M4 Pistol Tube Kit Includes: (1) Receiver Extension Buffer Tube, 1.19" Pistol W/Quick Deta..

AR15/M4 Multi-Adaptable Design MAD Steel End Plate Upgrade QD/Hook

$21.95

AR15/M4 MAD End PlateReplaces existing end-plate to add Quick Detach Socket & Mash/HK Style Oval..

AR15/M4 Buffer, Recoil, Carbine, H2

$39.95

H2 Carbine Recoil Buffer for AR15 & M4 Platforms7075-T6 Aluminum Alloy Body Poly ether Urethane ..

AR15/M4 Carbine H2 Buffer Upgrade Kit, 4pc EnhancedChrome Silicon Recoil Spring, Buffer, Detent/Spring

$55.95

AR15/M4 Platforms, Including Pistol BuildsH2 Buffer Upgrade Kit includes:H2 Buffer, Mil-Spec 4.7 ozE..

AR15/M4 Castle Nut & End Plate Comb Mil-Spec, Mag Phos

$9.95

Castle Nut & End Plate ComboMil-Spec AR15/M4 PlatformsCastle Nut - Steel, Slots angled to pin, M..

AR15/M4 Castle Nut & End Plate Combo Enhanced QD Socket STEEL or ALUM

$25.95

Now Available in Choice of Steel or AluminumAR15/M4 Castle Nut & End Plate Combo Enhanced Quick ..

AR15/M4 End Plate, M4 Receiver, USGI

$3.95

AR15 & M4 PlatformsUSGI End Plate, SteelMag PhosphateMade in USA...

AR15/M4 Extended Pistol Buffer Tube w/ Step 1.20" diameter, QD Socket

$29.95

Extended Pistol Buffer TubeMachined from 6061 Billet AluminumHard-coat anodizedWorks with standard..

AR15/M4 Kit, 3pc Selector Assembly

$14.95

AR-15/M4 Standard Selector KitIncludesSelector x 1 (Black Oxide finish)Selector Detent x 1Selector D..

AR15/M4 Pistol Buffer Tube Receiver Extension w/QD socket 1.190” Diameter

$28.95

AR15 Pistol Buffer Tube1.190” outside diameter, Overall Length ~ 7 3/8"Machined from 6061 Billet Alu..

AR15/M4 Receiver Extension Buffer Tube Carbine, 6 POS Mil-Spec

$29.95

AR15/M4 Carbine length, 6 position adjustment Buffer TubeMil-Spec 7075-T6 Aluminum Impact Extru..

AR15/M4 Spring Kit - Hammer/Trigger Springs & Pins

$6.95

Mil-spec, made in USAIncludesTrigger Spring x 1Hammer Spring x 1Disconnector Spring x 1Trigger/Hamme..

AR15/M4 Spring Kit Lower Receiver 9pc

$9.95

Mil-spec, made in USAIncludesHammer Spring x 1Trigger Spring x 1Magazine Catch Spring x 1Selector De..

AR15/M4 Steel End Plate, Ambi, HK Snap/Mash Hook Attachment

$8.95

AR15/M4 Billet Steel Ambi Snap/Mash Hook End PlateReceiver end plate includes Dual Sling Loops Ambid..

AR15/M4 USGI 4pc Sliding Stock Pin/Nut/Spring Kit

$6.95

AR15/M4 USGI 4pc Sliding Stock Pin/Nut/Spring Kit Includes:- Locking Pin, Steel, Mag Phosphate- Lock..

AR15/M4 USGI 5pc Sliding Stock Lever Replacement Kit

$9.95

USGI M4/AR15 Adjustable Stock Lever Replacement Kit, Mil-SpecKit Includes:- Release Lever, Black Pol..

AR15/M4 USGI 5pc Sliding Stock Lever Replacement Kit, Knurled

$9.95

USGI M4/AR15 Adjustable Stock Lever Replacement Kit, Knurled Includes:- Release Lever, Black Polymer..

AR15/M4/M16 Ambi Selector, Safe-Fire, 90° Throw Lever

$34.95

AR15 M4 M16 Compatible 90° Ambidextrous Semi-Auto Selector Replaces Stock Selector to allow ..

AR15/M4/M16 Civil Defense Logo Trigger Guard w/Plug

$19.95

Our Enhanced Trigger Guard with plug features a shape that fills the "gap" left by traditional AR-..

AR15/M4/M16 Enhanced Trigger Guard, Black

$19.95

Our Enhanced Trigger Guard allows the trigger guard to pivot downward. Does not fill the "gap" left ..

AR15/M4/M16 Selector, Ambi, Safe-Fire, 45° Throw Lever

$34.95

AR15/M4 Ambi SelectorThe 45° selector comes with 2 long levers, screws and hex toolOur Ambi Selector..

AR15/M4/M16 Spring, Extractor, Mil-Spec Copper Plated

$1.00

AR15 M4 & M16 platformsStandard power extractor spring with mil-spec copper plating4 CoilClosed..

AR15/M4/M16 Thin Enhanced Trigger Guard, Destroyer Gray

$19.95

Our Thinnest Enhanced Trigger Guard allows the trigger guard to pivot downward. Assembly includes:&n..

Bolt Catch, AR15/M4/M16

$8.95

AR15/M4/M16 Mil-spec Bolt CatchMade in USA..

Buttstock, USGI M4 Adjustable Carbine Sliding w/ Sling Loop, FDE Flat Dark Earth

$39.95

M4 USGI Sliding Buttstock Assembly w/fixed Sling LoopAR15/M4 Mil-Spec M4 Carbine Sliding Buttstock ..

Buttstock, USGI M4 Adjustable Carbine Sliding w/ Sling Loop, OD Green

$39.95

M4 USGI Sliding Buttstock Assembly w/fixed Sling LoopAR15/M4 Mil-Spec M4 Carbine Sliding Buttstock ..

Buttstock, USGI M4 Carbine Sliding w/ Sling Loop, Mil-Spec, Black

$39.95

M4 USGI Sliding Buttstock Assembly w/fixed Sling LoopAR15/M4Mil-Spec M4 Carbine Sliding Buttstock wi..

CARBINE LENGTH Enhanced Chrome Silicon Recoil Buffer Spring, AR-15 M4

$12.95

For a Single AR-15 / M4 Carbine:Made in the USA and 100% quality inspected by hand for proper functi..

Detent, Buffer Retainer, AR15/M4/M16

$1.00

Buffer Retainer Detent for AR15/M4/M16 PlatformsMachined from billet 4140 SteelProtective Finish: Ma..

H Buffer, Recoil, Carbine, AR15/M4

$25.95

H Carbine Recoil Buffer Aluminum Alloy Body with Tungsten Weights, PinnedMarked HMil-Spec 3.8ozMade ..

Kit, 3pc Magazine Catch Assembly AR15/M16/M4

$12.95

AR15/M4/M16 Magazine Catch KitIncludesMagazine catch x 1Magazine catch button x 1Magazine catch spri..

Kit, Buffer Retainer & Spring

$2.25

AR15 M4 M16 (A1-A4) Buffer Retainer and Buffer Retainer Spring kitBuffer Retainer: Steel with Mag Ph..

LPK Kit, Lower Receiver Parts, AR-15/M4/M16 Semi-Auto

$69.95

100% Made in USA.Kit Includes:Pistol GripPistol Grip ScrewPistol Grip Lock WasherBuffer RetainerBuff..

Magazine, Colt SS 9MM, 32 Rd

$69.95

Rugged, all-steel, high-capacity magazines for 9mm AR-15 conversions that use a Colt-style magazine...

Pistol Grip, ECS, OD Green AR15/M4

$4.95

ECS Grips* Classic A2 style* Molded Polymer milspec materialsMade in the USA..

Spring, Recoil Buffer Carbine, AR15/M16, Stainless

$5.95

Standard Carbine Recoil Spring for AR15/M4 Platforms with adjustable stocksStainless SteelMade in US..

Kit, Rifle Enhanced Recoil Spring Upgrade w/Buffer

$29.95

Kit Includes:(1) Rifle Length Chrome Silicon Enhanced Recoil Spring(1) Rifle Buffer (5.2oz)Made in t..

Buffer, Recoil, Carbine

$14.95

AR15/M4 Standard Recoil Buffer - Carbine LengthWeight = 3 oz.PinnedMade in USA..

Kit, Hammer & Trigger Group AR15

$49.95

AR15 Semi Auto Hammer Trigger KitKit includes:• Hammer• Hammer Spring• Trigger• Trigger Spring• Disc..

Buffer, Recoil, Carbine, H3

$42.95

H3 Carbine Recoil Buffer Aluminum Alloy Body with Tungsten Weights, PinnedMarked H3Mil-Spec 5.4 ozMa..

Kit, Bolt Catch Assembly AR15/M4/M16

$12.95

Made in USA.IncludesBolt Catch x 1Bolt Catch Roll Pin x 1Bolt Catch Plunger, Black Oxide x 1Bolt Cat..

Kit, Hammer Assembly AR15/M4 Semi

$22.95

Semi-Auto, AR15 Hammer Kit Includes:Mil-Spec Dimensions, 8620 Alloy Steel, Black Oxide HammerMil-Spe..

Stock, Enhanced Combat System, Commercial Spec, Coyote Tan

$89.95

* Drop-in Installation on M4 receiver extensions (Buffer Tube)* Full length storage compartments hol..

Stock, Enhanced Combat System, Commercial Spec, Foliage Green

$89.95

* Drop-in Installation on M4 receiver extensions (Buffer Tube)* Full length storage compartments hol..

AR-15 Trigger

$16.95

AR15 Trigger, Mil Spec dimensionsMade in USA..

AR15/M16 Locking Washer, Pistol Grip

$1.00

Don't let your friends say you've got a loose screw - maintain your grip with a fresh locking washer..

AR15/M16 Plunger, Bolt Catch

$1.00

Available in NicoTef or Black Oxide finish.Made in USA..

AR15/M16 Spring, Trigger Guard Detent

$1.00

Mil-spec, made in USA..

AR15/M4 MILSPEC Nut, Castle Receiver Extension Tube, Mag Phosphate

$5.95

AR15/M4 Platforms - Castle NutMilitary SpecificationsMachined from Cold Drawn Steel3 minor Slots ang..

AR15/M4 Nut, Castle Receiver Extension Tube, Black Oxide

$5.95

Threaded to fit standard AR15/M4 PlatformsSlotted to pinBlack Oxide FinishAs always - Made in USA...

AR15/M4 USGI Sliding Stock Lever Replacement, Black, Knurled

$3.95

Replacement Lever for USGI Standard M4/AR15 Sliding StockMolded with durable black polymer.Knurled.M..

Carbine AR15/M16 Spring, Recoil Buffer Action, Music Wire

$4.95

For AR-15 / M4 Carbine.Higher performance over stainless mil-spec recoil spring - reduces perceived ..

Detent, Selector, AR15/M4/M16

$1.00

NicoTef provides exceptional lubricity and corrosion resistance while maintaining a low coeffici..

Detent, Takedown/Pivot Pin, AR15/M16

$1.00

NicoTef provides exceptional lubricity and corrosion resistance while maintaining a low coeffici..

Disconnector, AR-15

$6.25

Disconnector, AR-15Made in USA...

Enhanced Combat System Furniture Kit, Commercial Spec, Coyote Tan

$116.95

Available in Coyote, Foliage Green, and FDE 30118.ECS Stock* Drop-in Installation on M4 receiver ext..

Enhanced Combat System Furniture Kit, Commercial Spec, Foliage Green

$116.95

Available in Foliage Green, Coyote, and FDE 30118.ECS Stock* Drop-in Installation on M4 receive..

Fastener, Ambi-Selector Lever

$1.00

FHSCS M3-0.5x6 fastener. Intended for use in with our 90° Standard Throw and 45° Throw ambi selector..

Hammer, AR-15/M4 Semi

$17.95

AR-15/M4 Semi Auto Hammer Mil-Spec dimensions Made in USA...

Kit, Pistol Grip Screw w/Lock Washer

$1.95

Kit Includes: (1) Pistol Grip Screw, Hex or Slotted(1) Lock WasherMade in USA..

Kit, Trigger 3pc Assembly Kit AR15/M4

$22.95

Kit Includes:Mil-Spec TriggerMil-Spec Trigger SpringMil-Spec Trigger PinAll Made in the USA..

Magazine Catch, AR15/M4/M16

$7.95

AR15 Platform Magazine CatchMade in USA...

Magazine Release Button, AR15/M16/M4

$2.00

Billet 7075-T6 AluminumType 3 Hardcoat AnodizedMade to Military SpecificationsMade in USA..

Pin, Bolt Catch

$1.00

Made in USA...

Pin, Hammer/Trigger, AR15/M16

$1.00

Mil-Spec, Made in USA. ..

Lower Parts

Explore Sub-Categories