Join our mailing list!

HACKER SAFE certified sites prevent over 99.9% of hacker crime.

You are here: Home > Upper Receivers/Conversion Kits
Find by Pricing
Below 180 (29)
180 to 389.99 (26)
390 to 549.99 (33)
550 to 659.99 (29)
660 and Above (57)
Find by Brand
Adams Arms (2)
Advanced Armament Corp (1)
Advantage Arms (16)
Armalite (1)
Barrett (2)
Bushmaster (2)
CMMG (27)
CZ (1)
Daniel Defense (1)
DPMS (5)
Phoenix (2)
PW Arms (1)
Rock River Arms (2)
Smith & Wesson (3)
Spike's Tactical (6)
Storm Lake Barrels (5)
TacStar (2)
Choose a sub category:
Adams Uppers Bushmaster Uppers
Colt uppers CMMG uppers
Daniel Defense Uppers DPMS Uppers
LWRCI uppers Noveske Uppers
Rock River Arms Uppers Spikes Tactical uppers
Smith & Wesson uppers Windham Uppers
Conversion Kits
The best thing about owning even a moderate quality AR15 is the ability to accessorize and build upon the platform. If you've got a good well built AR15 Lower, all you need is the skill to know how each variation of the AR15 family of firearms can be used. A Standard A2 model is a great starting point for learning the basics of shooting.  Spikes Tactical Uppers You can turn a target model AR15 into a CQB weapon but popping out 2 pins and swapping in CMMG Uppers or even changing calibers to the Smith & Wesson 5.45x39 upper. With ammo pricings being what they are a 5.45x39 upper from S&W will pay for itself after 2 or 3 thousand rounds. All CMMG Uppers are complete with bolt and bolt carrier group. Be sure to check out flip up front and rear sight options while you are selecting your uppers.   The piston driven LWRC uppers are more expensive in some regards, but we have seen fewer parts breakages with long term use and there is now a new light weight AR15 upper that is less expensive.


Sort By:
Page of 5
MAGAZINE ADVANT CONV KIT 1911 22LR MAGAZINE ADVANT CONV KIT 17-22 22LR
List Price: $16.67
Our Price: $13.99
List Price: $16.67
Our Price: $13.99
MAGAZINE ADVANT CONV KIT 1911 22LR MAGAZINE ADVANT CONV KIT 17-22 22LR
Advantage Arms Mag 22LR 10Rd Black 1911 AAC1911 Advantage Arms Mag 22LR 10Rd Black Glk 17, 22 AACLE1722
MAGAZINE ADVANT CONV KIT 19-23 22LR MAGAZINE ADVANT CONV KIT 20-21 22LR
List Price: $16.67
Our Price: $13.99
List Price: $16.67
Our Price: $13.99
MAGAZINE ADVANT CONV KIT 19-23 22LR MAGAZINE ADVANT CONV KIT 20-21 22LR
Advantage Arms Mag 22LR 10Rd Black Glk 19, 23 AACLE1923 Advantage Arms Mag 22LR 10Rd Black Glk 20, 21 AACLE2021
MAGAZINE ADVANT CONV KIT 26-27 22LR MAGAZINE ADVANT CONV KIT 29-30 22LR
List Price: $16.67
Our Price: $13.99
List Price: $16.67
Our Price: $13.99
MAGAZINE ADVANT CONV KIT 26-27 22LR MAGAZINE ADVANT CONV KIT 29-30 22LR
Advantage Arms Mag 22LR 10Rd Black Glk 26, 27 AACLE2627 Advantage Arms Mag 22LR 10Rd Black Glk 29, 30 AACLE2930
CMMG BHOA(BOLT HOLD OPEN ACTUATOR) MAG CMMG 22LR 26RD FOR CMMG CONVER
List Price: $19.95
Our Price: $17.99
List Price: $19.99
Our Price: $17.99
CMMG BHOA(BOLT HOLD OPEN ACTUATER) MAG CMMG 22LR 25RD FOR CMMG CONVER
CMMG Part Black Bolt Hold Open Acutater 11019 CMMG Mag 22LR 26Rd Gray AR Rifles MGCMMGSSAT30
MAG CMMG AR15 SSAT 30RD BRAIDED SPRG MAG CMMG 22LR 25RD W/BHOA FOLLOWER
List Price: $24.00
Our Price: $17.99
List Price: $27.95
Our Price: $24.99
MAG CMMG AR15 SSAT 30RD BRAIDED SPRG MAG CMMG 22LR 25RD W/BHOA FOLLOWER
CMMG Mag 223 Rem 556NATO 30Rd Black Stainless Steel Anti-Tilt Follower, Braided Spring AR Rifles MGCMMGSSAT30 CMMG Mag 22LR 25Rd Gray AR-15, Must have BHOA Actuator (CMMG11019) 11012
MAG CMMG 25RD 22 EVOL LONG SKIN MAG MAG S&W M&P-15 5.45X39 30RD BL
List Price: $29.99
Our Price: $26.99
List Price: $35.25
Our Price: $27.99
Smith & Wesson Mag 545X39 30Rd Blue M&P 15 40304
CMMG Mag 22LR 25Rd Black AR Rifles 11113 Smith & Wesson Mag 545X39 30Rd Blue M&P 15 40304
SPIKE'S ST-T2 TUNGSTEN HEAVY BUFFER PHOENIX HP22/HP22A CONV KIT BL
List Price: $32.95
Our Price: $28.99
List Price: $45.00
Our Price: $29.25
SPIKE'S ST-T2 TUNGSTEN HEAVY BUFFER PHOENIX HP22/HP22A CONV KIT BL
Spike's Tactical Part SLA00T2 Phoenix Conv Kit 22LR 5" Blue Vent Rib HP22/HP22A HP22BBLB
PHOENIX HP22/HP22A CONV KIT NIK MAGAZINE ADV CONV KIT 17-22 22LR 25R
List Price: $45.00
Our Price: $29.25
List Price: $40.00
Our Price: $29.99
PHOENIX HP22/HP22A CONV KIT NIK
Phoenix Conv Kit 22LR 5" Nickel Vent Rib HP22/HP22A HP22BBLN Advantage Arms Mag 22LR 25Rd Black Glock 17/22,19/23  Gen 3 and Gen 4 Models AA22GHC25
MAG CMMG .308 DPMS/SR-25 SS ANTI-TIL CMMG LOWER RECEIVER PARTS KIT
List Price: $40.00
Our Price: $34.99
List Price: $59.95
Our Price: $59.99
MAG CMMG .308 DPMS/SR-25 SS ANTI-TIL CMMG LOWER RECEIVER PARTS KIT
MAG CMMG .308 DPMS/SR-25 SS ANTI-TIL CMMG Part Black Lower Receiver Parts Kit 10208
SPIKE'S LOWER RECIEVER PARTS KIT CMMG SMITH ENT. STRIKER VORTEX FH
List Price: $71.95
Our Price: $64.99
List Price: $120.00
Our Price: $99.99
SPIKE'S LOWER RECIEVER PARTS KIT CMMG SMITH ENT. STRIKER VORTEX FH
SPIKE'S LOWER RECIEVER PARTS KIT CMMG Smith Enterprise Striker Carbide Glass Breaker/Stand off Device Black 1/2X28 1 CMMGSTRIKER
TACSTAR CONVERSION KIT REM 870/1100 TACSTAR CONVERSION KIT MOSS 500/590
List Price: $114.95
Our Price: $99.99
List Price: $114.95
Our Price: $99.99
TACSTAR CONVERSION KIT REM 870/1100 TACSTAR CONVERSION KIT MOSS 500/590
TacStar Conversion Kit Front & Rear Grip, Sidesaddle, Sling, Barrel ClampQD Sling Swivel Remington 870 & 1100 1081147 TacStar Conversion Kit Black Front & Rear Grip, Sidesaddle, Sling, Barrel ClampQD Sling Swivel Moss 500/590 1081148
STORM SPFD XD 40SW TO 9MM CONVERSION STORM SW M&P 40SW TO 9MM CONVERSION
List Price: $160.00
Our Price: $139.99
List Price: $160.00
Our Price: $139.99
STORM SPFD XD 40SW TO 9MM CONVERSION STORM SW M&P 40SW TO 9MM CONVERSION
Storm Lake Barrels Barrel 9MM 4.05" Stainless Conversion Barrel Converts 40SW to 9MM Springfield XD SF-XDS-9MMC-405-OP-00T Storm Lake Barrels Barrel 9MM 4.25" Stainless Conversion Barrel Converts 40SW to 9MM S&W M&P SW-MP-9MMC-425-OP-00T
CMMG 22LR DROP IN CONVERSION/1-25RD STORM GL22 40SW TO 9MM CONVERSION SS
List Price: $179.00
Our Price: $144.99
List Price: $160.00
Our Price: $144.99
CMMG 22LR DROP IN CONVERSION/1-25RD STORM GL22 40SW TO 9MM CONVERSION SS
CMMG 22LR DROP IN CONVERSION/1-25RD Storm Lake Barrels Barrel 9MM 4.49" Stainless Conversion Barrel Converts 40SW to 9MM Glock 22 GL-22-PMMC-449-OP-00T
STORM GL23 40SW TO 9MM CONVERSION SS STORM GL27 40SW TO 9MM CONVERSION SS
List Price: $160.00
Our Price: $144.99
List Price: $160.00
Our Price: $144.99
STORM GL23 40SW TO 9MM CONVERSION SS STORM GL27 40SW TO 9MM CONVERSION SS
Storm Lake Barrels Barrel 9MM 4.02" Stainless Conversion Barrel Converts 40SW to 9MM Glock 23 GL-23-9MMC-402-OP-00T Storm Lake Barrels Barrel 9MM 3.46" Stainless Conversion Barrel Converts 40SW to 9MM Glock 27 GL-27-9MMC-346-OP-00T
CMMG TACTICAL BACON 9OZ COOKED 12PK CMMG 22LR DROP IN CONVER SS 1-25RD
List Price: $159.95
Our Price: $146.99
List Price: $199.99
Our Price: $184.99
CMMG TACTICAL BACON 9OZ COOKED 12PK CMMG 22LR DROP IN CONVER SS 1-25RD
CMMG Tactical Bacon Can Precooked 9oz 12/Pack CMMG10206 CMMG 22LR DROP IN CONVER SS 1-25RD
CMMG EVOLUTION 22LR CONV KIT SS 25RD ADV ARMS CONV KIT LE19-23 GEN4/CLEAN
List Price: $259.95
Our Price: $239.99
List Price: $265.00
Our Price: $249.00
CMMG EVOLUTION 22LR CONV KIT SS 25RD
CMMG Evolution Conv Kit 22LR Stainless BHOA/Charging Handle Forward Assist/Bolt Hold Follower AR Rifles 25Rd 11026 Advantage Arms Conv Kit 22LR 4.02" Black w/Clng Kit Glock 19/23 Generation 4 AAC19-23G4
ADV ARMS CONV KIT LE19-23 W/CLEAN KT ADV ARMS CONV KIT LE20-21 W/CLEAN KT
List Price: $265.00
Our Price: $249.99
List Price: $265.00
Our Price: $249.99
ADV ARMS CONV KIT LE19-23 W/CLEAN KT ADV ARMS CONV KIT LE20-21 W/CLEAN KT
Advantage Arms Conv Kit 22LR 4.02" Black w/Clng Kit Glk 19, 23 AACLE19-23 Advantage Arms Conv Kit 22LR 4.6" Black w/Clng Kit Glk 20, 21 AACLE20-21
ADV ARMS CONV KIT LE26-27 W/CLEAN KT ADV ARMS CONV KIT LE17-22 GEN4/CLEAN
List Price: $265.00
Our Price: $249.99
List Price: $265.00
Our Price: $249.99
ADV ARMS CONV KIT LE26-27 W/CLEAN KT ADV ARMS CONV KIT LE17-22 GEN 4/CLEA
Advantage Arms Conv Kit 22LR 3.46" Black w/Clng Kit Glk 26, 27 AACLE26-27 Advantage Arms Conv Kit 22LR 4.49" Black w/Clng Kit Glk 17, 22 Generation 4 AAC17-22G4
ADV ARMS CONV KIT LE29-30 W/CLEAN KT ADV ARMS CONV KIT LE20-21 W/CLEAN KT
List Price: $265.00
Our Price: $249.99
List Price: $265.00
Our Price: $249.99
ADV ARMS CONV KIT LE29-30 W/CLEAN KT ADV ARMS CONV KIT LE20-21 W/CLEAN KT
Advantage Arms Conv Kit 22LR Black Glk 29, 30 AACLE29-30 ADV ARMS CONV KIT LE20-21 W/CLEAN KT
ADV ARMS CONV KIT LE17-22 W/CLEAN KT ADV ARMS CONV KIT STD 1911 22LR CLEA
List Price: $265.00
Our Price: $249.99
List Price: $275.00
Our Price: $269.99
ADV ARMS CONV KIT LE17-22 W/CLEAN KT ADV ARMS CONV KIT STD 1911 22LR CLEA
Advantage Arms Conv Kit 22LR 4.49" Black w/Clng Kit Glk 17, 22 AACLE17-22 Advantage Arms Conv Kit 22LR Black w/Clng Kit 1911 AAC191122S
   
 
Don't forget to stock up on the best AR15 gun magazines the Magpul pmags come in 5rd, 10rd, 20rd and 30rd round. You can even get the 40rd magazines if your State allows it, 5.45x39 C products magazines,
More tactical gun mags and gun cases. Uncle Mikes gun cases, Glock gun cases,  Bulldog gun cases, Pelican gun cases, Tac-Force guncases, Blackhawk gun cases,  Gunguard gun case
Spike's Tactical uppers
Smith & Wesson 5.45x39 uppers