Skip to navigation Skip to content

ATFirearms

Southwestern PA's favorite arms dealer.

Search

×

Shop
Firearms
Optics
Parts
Reloading
- Brass
- Bullets
- Primers
- Powder
- Dies
Ammo
About Us

Shop
Firearms
Optics
Parts
Reloading
- Brass
- Bullets
- Primers
- Powder
- Dies
Ammo
About Us

$0.00 0 items

Home / Gun Parts / AR Lower Parts / Page 45

AR Lower Parts

SHOW FILTERS

Price

Manufacturer

10 Ring Marketing / WRJ
ACE
Adaptive Tactical
Advanced Tech
Aero Precision
ALG Defense
Amend2
Anderson Manufacturing
Angstadt Arms
AOB
Armaspec
ATI Outdoors
B5 Systems
Battle Arms Development
Black Rain Ordnance
Bravo Company Mfg / BCM
C&E Innovations DBA Amend2
CMC Triggers
CMMG
Daniel Defense
Del-Ton
Die Free Co
DoubleStar
Edgar Sherman Design
Elftmann Tactical
Ergo
FAB Defense
Fortis Manufacturing
FosTech Outdoors
Franklin Armory
Gear Head Works
Geissele Automatics
Guntec USA
HEXMAG
Hiperfire
Hogue
J&E Machine Tech
Juggernaut Tactical
KAK Industry
KynSHOT
Lantac USA
LBE Unlimited
Leapers
Luth-AR
LWRC
Magpul Industries
Maxim Defense Industries
Midwest Industries
Mission First Tactical
Mossberg
NcSTAR
Noveske Rifleworks
Odin Works
Patriot Ordnance Factory
Pearce Grips
Phase 5
ProMag
Q LLC
Radian Weapons
Reptilia
Rise Armament
San Tan Tactical
SB Tactical
Seekins Precision
Sharps Bros
Sig Sauer
Sons of Liberty Gun Works
Spikes Tactical
Stern Defense
Strike Industries
Sylvan Arms
TacFire
Tapco
Timney
TPS Arms
Trigger Tech
TROY Industries
Tyrant CNC
Wilson Combat
Woox
XTECH Tactical
Yankee Hill Machine

Show value(s)

Model

2-Stage
308 Lower Parts Kit
556
9mm
9MM Bolt Buffer
A2
A2 Buffer Tube
A2 Buttstock Kit
A5 Buffer System
A5 Style
ACE
ACS
ACS-L
ADAC15
Adaptable
Adjustable Tactical Grip
AG-43
AGF-43S
Ambidextrous
Amend2 Modular Stock
Anti-Walk
AR
AR 308
AR Essentials kit
AR Parts
AR Pistol Grip
AR Style
AR-10 Lower Parts Kit
AR-15
AR-15 Carbine
AR-15 Lower Parts Kit
AR-15 LPK
AR-15 Parts Kit
AR-15/M16
AR10 Gun Builders Kit
AR15
ASAP
B.A.D. Lever
B2
Bad-Ass-Elite
BAD-ASS-LITE
Bad-Ass-Pro
Basic Build Kit
BCM
BCMGunfighter
BDA Arm Brace
Binary
Blaster Starter Kit
Blitz
Bolt Catch
Bolt Catch Pro
Bolt Kit
Bolt Release
Bravo
Bren2
BSL Arm Brace
Buffer & Spring
Buffer Kit
Buffer Tube
Builder's Kit
Buttpad
Calvin Elite
CAR15
Carbine Buffer
Cargo Management System
Cheek Riser MOE/CTR
Chubby
Competition Trigger
Competitive
Complete Lower Parts Kit
Component
CQG
CQG L
CQG NB
CTR
Diamond
Don't Tread on Me
Drop-In
Drop-In Trigger Kit
DT Carbine Stock
DT-PR Carbine Stock
Duty
ECB Kit
ECB Slant Kit
ECT-1
EMT-9
End Plate Sling Adapter
Engage
Enhanced
Enhanced Anti-tilt
Enhanced AR Magazine Release
Enhanced Carbine Buffer Tube
Enhanced Duty Trigger
Enhanced Modular Magazine Release
Enhanced Trigger Unit
Ergo 2
ESK
Essential Retro Stock
ETG
EX Performance
Extended
Extended Bolt Catch
EZ Install
EZ Pull
Field Repair Kit
Fire Control Group Kit
Fix-It Kit
Flat Super Sporting Trigger
Flat Wire Spring
Flip Switch
FSA Stabilizer
FT90
Fulcrum45
Fulcrum45/90
G2s
Gen 7
GEN4
GL-Core
Gradus
Granite
Grip
Gunfighter Grip
H2 Buffer
H2S
H3 Buffer
Hammer/Trigger
HBPDW
Heavy Buffer
Hellcat
Hi-Speed
Hipertouch
HK Brace
Hydraulic Buffer Kit
Iconic
Impact
JM Pro
JP
K-SPEC
Kung Fu Grip
LE145
Lightweight Tactical Grip
Lightweight Tactical Grip (LTG)
Literally The Best Trigger Ever Made
Lower Parts Kit
Magazine Catch
Magazine Release
MIAD
Mil Spec Buffer Tube Kit
Mil-Spec
Mil-Spec Buffer Tube
Mini
MK2 Buffer
MK2 Buffer Mod 1
MK2 Receiver Extension
MK2 Recoil Mitigation System
MOD 0
Mod 1
Mod 3 Stock
Mod 3 Stock Riser
Mod 4 Grip
Modular Overmolded
MOE
MOE Carbine Stock
MOE Fixed Carbine
MOE Fixed Carbine Stock
MOE K2
MOE PR Carbine
MOE RL Carbine Stock
MOE SL
MOE SL-K Carbine Stock
MOE SL-M
MOE SL-S
MOE Slim Line Carbine Stock
MOE TR Carbine
MOE-EVO
MOE-K
MOE-K2
MOE-K2+
MOE+
Original
OverMolded
OverMolded Rifle Grip
Oversized Magazine Release
P-Grip
P-Grip 22 K
PCC Trigger
PDI
PDW
Picker
Pistol Grip Enhanced
Pivoting Contour Brace
PNT (Polished, Nickel, Teflon)
Pro Ambidextrous
PRS GEN3
PRS Lite
Quick Ambi Safety
Quick Detach
Quick Detach Mount
R15015098
RA-100
RA-140
RA-434
RA-535
RAVE
RB5000
RB5000HP
RB5000L
RB5001
RB5004
RB5005
RB5006
RB5007
RB5015HD
RB5020SS
RECC-E
Recoil Buffer
Reliant
Replacement Trigger
Sabretube
Safety Selector
SBA3
SBA4
SBA5
SBM4
SBT
SBT-G2
SBTEVO-G2
SBTi
SD
SD-E
SFT 45/90
Shorty Stock
Sierra K
Single Point
Single Stage Combat Curved
Single Stage Curved
Sling Attachment Plate
Sloped Quick Disconnect
SLS Fifty
Small Parts Kit
SMB Buffer Kit
SOB
SOB47
Sound Mitigation Buffer Gen 3
SRS Buffer Kit
SS Fifty
SSA
SSA-E
SSP
ST-T3
ST45
Standard
Stealth
STR
Strike Folding Adaptor Stock
Strike Switch
Super 3 Gun
Super 42
Super Dynamic Combat
Super Sabra
Super Scar
Super Semi-Automatic
Super Sporting Trigger
Super Tricon
Superlight Gun Builders Kit
Superlight Lower Parts Kit
SUREGRIP
Tactical Deluxe
Tactical Trigger Unit
TactLite
Take Down Pin Set
Takedown Pin Set
Takedown/Pivot Pins
Talon
Targa Short Trigger
The Patriot
Tigger Guard
Torque
Tread M400
Trigger Guard
Trigger Kit
Type 22 P-Grip
Type 23 P-Grip
UBR Gen 2
Ultimate Takedown Pin Set
Ultra Combat
Ultralight
Ultralight Carbon Fiber
UPS-S
UPS-TI
UTG
UTG PRO
Vertex
Vertical Grip
Without Fire Control/Trigger Group
X-Grip
X1
X2S
Zeroed
Zeroed Lower Parts Kit

Show value(s)

Length

0.8500
10.0500
10.2000
10.2500
10.3500
10.4500
10.5500
10.6000
10.6500
10.7000
10.9000
10.9500
11
11.2000
11.2500
11.4500
11.5
11.5000
11.5500
11.9000
11.9500
12.5500
13.0500
13.1000
13.2500
14.5000
14.8500
15.0500
15.2000
16.7000
2
2.1000
2.9000
22.0500
3.0500
3.1500
3.3500
3.4000
3.6000
3.8500
3.9500
4
4.0500
4.1500
4.2000
4.2500
4.3000
4.3500
4.4500
4.5000
4.6000
4.6500
4.7000
4.7500
4.8000
4.9500
5
5.1000
5.1500
5.2000
5.2500
5.3000
5.3500
5.4000
5.4500
5.5
5.5000
5.5500
5.63"
5.6500
5.7000
5.7500
5.8500
5.9000
5.9500
6
6.1000
6.1500
6.2000
6.2500
6.3500
6.4000
6.5500
6.6500
6.7000
6.7500
6.8000
6.9000
6.9500
7
7.0500
7.1000
7.1500
7.2
7.2000
7.2500
7.3
7.3000
7.3500
7.4000
7.5
7.5000
7.5500
7.6000
7.6500
7.7000
7.7500
7.7700
7.8
7.8000
7.8500
7.9000
7.9500
8
8.0500
8.1000
8.1500
8.2000
8.2500
8.3500
8.4000
8.4500
8.5000
8.5500
8.6000
8.7000
8.7500
8.8000
8.9000
8.9500
9
9.1000
9.2000
9.2500
9.3
9.3500
9.4500
9.5000
9.5500
9.6500
9.7500
9.9000

Show value(s)

Color

2 STAGE TRIGGER
2 STAGE TRIGGER CURVED
45/90 SAFETY SELECTOR
ACTION TUNING SET
ALL AR PLATFORMS CURVED
ALL AR PLATFORMS STRAIGHT
AMBIDEXTROUS BOLT RELEASE
AMBIDEXTROUS MAGAZINE RELEASE
AMBIDEXTROUS SAFETY KIT
AR PISTOL EXTENSION TUBE
AR SAFETY AMBIDEXTROUS SPEED
AR-15 BUTTSTOCK
AR-15 FURNITURE KIT
AR-15 GRIP MATTE BLACK
AR-15 LOWER SMALL PARTS KIT
AR-15 PISTOL GRIP
AR-15 TRIGGER
AR10 CARBINE BUFFER TUBE
AR14/AR10
AR15 BUFFER TUBE
AR15 BUFFER TUBE, FDE CERAKOTE
AR15 COMPLETE LOWER PARTS KIT
AR15 CURVED TRIGGER
AR15 ENDPLATE
AR15 LOWER PARTS KIT
AR15 STRAIGHT TRIGGER
AR15 TAKEDOWN PIN KIT
AR15 TRIGGER
ARM BRACE TAILHOOK / BLACK
BAR STOCK TAKE DOWN PIN BLACK
Black
BLACK LOWER RECEIVER PARTS KIT
BLACK MATTE
Black, Blue
Black, Silver
Blue
BOLT CATCH
Brazilian Cherry
Brown
BUFFER SPACER WEIGHT
BUFFER SPRING & buffer
BUFFER TUBE ASSY
BUFFER WEIGHT
BUTTSTOCK
BUTTSTOCK & GRIP/BLACK
BUTTSTOCK & GRIP/FDE
BUTTSTOCK/BLACK
BUTTSTOCK/FDE
BUTTSTOCK/OD GREEN
CAST BLACK
Clear
COYOTE
COYOTE BROWN
Dark Earth
Desert Tan
DROP IN 2 STAGE TRIGGER KIT
DROP IN TRIGGER GROUP
DROP-IN/BLACK
END PLATE
ERGO PISTOL GRIP
EXTENDED BOLT CATCH
EXTENDED BOLT RELEASE V1
EXTENDED BOLT RELEASE V2
EXTENDED BOLT RELEASE V3
FDE LOWER RECEIVER PARTS KIT
Flat Dark Earth
Gold
Gray
HD PIVOT & TAKEDOWN PINS
HYDRAULIC RECOIL BUFFER
INVESTMENT CAST BLACK
Kodiak Brown
LOWER PARTS KIT
MAG RELEASE BUTTON
MAGAZINE RELEASE
MATCH TACTICAL TRIGGER
MIL-SPEC BUFFER TUBE ASSEMBLY
MIL-SPEC TRIGGER GROUP
MOD 3 STOCK WITH STOCK RISERS
Multi-Cam
Multi-Cam Black
MULTICAM
O.D. Green
OD GREEN
Olive Drab Green
ONE POINT SLING MOUNT
PINK
PISTOL BUFFER TUBE ASSY
PISTOL STABILIZING BRACE
PRECISION CNC BILLET BLACK
PURPLE
RECEIVER EXTENSION KIT
RECEIVER EXTENSION/STOCK
Red
SAFETY
Scorched Dark Earth
Silver
SINGLE STAGE
SKELETONIZED PISTOL GRIP
SKS STRIKERFORCE
SLING MOUNT ADAPTER
SSMC MAG CATCH
STOCK
STOCK ASSEMBLY MOD 3
STOCK FLAT DARK EARTH
STOCK KIT/BLACK
STOCK KIT/FDE
STOCK RISER KIT MOD 3
STOCK TUBE W/LW STOCK
TACTICAL PISTOL GRIP
TACTICAL PISTOL GRIP BLACK
TACTICAL STABILIZING BRACE/BLK
TACTICAL TRIGGER
TAKEDOWN PIN SET
TAKEDOWN PINS
TITANIUM TAKE DOWN PIN NATURAL
TRIGGER
TRIGGER FOR AR STYLE 9MM PCC
TRIGGER RED
TRIGGER/2 STAGE
TRIGGER/SINGLE STAGE
WOLF GRAY
Woodland Camo

Show value(s)

Caliber

.223 REM/5.56 NATO
.308 / 7.62 NATO
308 Cal
AR-15
Multi
MULTI CALIBER
Multi-Caliber
Universal

Tag

In Store!
Online Only

Showing 661–675 of 842 resultsSorted by latest

←
1
2
3
…
42
43
44
45
46
47
48
…
55
56
57
→

MAGPUL ASAP SLING PLATE BLK
$32.25 Add to cart
B5 P-GRIP 22 MULTICAM
$27.55 Add to cart
B5 P-GRIP 22 WOODLAND
$27.55 Add to cart
B5 P-GRIP 22 MULTICAM BLACK
$27.55 Add to cart
B5 P-GRIP 23 WOODLAND
$27.55 Add to cart
B5 P-GRIP 23 MCAM
$27.55 Add to cart
B5 P-GRIP 23 MULTICAM BLACK
$27.55 Add to cart
LBE AR15/M16 H1 HEAVY CARBINE BUFFER
$26.00 Add to cart
HOGUE OVERMOLD CARGO KIT AR15 FG BLK
$29.71 Add to cart
UTG PRO AR15 OPS RDY MIL-SPEC STOCK
$27.97 Add to cart
FORTIS MAG CATCH & BUTTON COMBO FDE
$23.70 Add to cart
ARMASPEC BRAIDED BUFFER SPRING AR15
$22.49 Add to cart
UTG PRO AR PISTOL RCVR EXT TUBE BLK
$32.97 Add to cart
KAK AR-15 LPK BASIC BUILD KIT
$24.99 Add to cart
ADV TECH AR15 X1 PISTOL GRIP BLK
$23.00 Add to cart

Showing 661–675 of 842 resultsSorted by latest

←
1
2
3
…
42
43
44
45
46
47
48
…
55
56
57
→

MAGPUL ASAP SLING PLATE BLK

B5 P-GRIP 22 MULTICAM

B5 P-GRIP 22 WOODLAND

B5 P-GRIP 22 MULTICAM BLACK

B5 P-GRIP 23 WOODLAND

B5 P-GRIP 23 MCAM

B5 P-GRIP 23 MULTICAM BLACK

LBE AR15/M16 H1 HEAVY CARBINE BUFFER

HOGUE OVERMOLD CARGO KIT AR15 FG BLK

UTG PRO AR15 OPS RDY MIL-SPEC STOCK

FORTIS MAG CATCH & BUTTON COMBO FDE

ARMASPEC BRAIDED BUFFER SPRING AR15

UTG PRO AR PISTOL RCVR EXT TUBE BLK

KAK AR-15 LPK BASIC BUILD KIT

ADV TECH AR15 X1 PISTOL GRIP BLK