Ammunition
37 / 40mm
Blank Ammunition
Hand Gun Ammunition
Inert / Dummy Ammunition
Linked Ammunition
Rifle Ammunition
Rimfire Ammunition
Shot Shell Ammunition
Brass Processing Service
Pistol Brass
Rifle Brass
Clothing
Base Layers
Belts
Bibs
Caps, Hats & Beanies
Coveralls
Detergents & Waterproofing
Face Masks, Balaclavas & Neck Gaiters
Ghillie Suits & 3-D Clothing
Gloves
Hand Warmers
Jackets, Coats & Parkas
Knee Pads & Chaps
Pants
Patches
Rain Gear
Shirts
Shorts
Silicone Rings
Sunglasses
Suspenders
Sweaters, Sweatshirts & Hoodies
Vests
Wallets
Watches
Firearms
Handguns
Long Guns
NFA Items
Non-Lethal
Parts & Accessories
Upper Receivers & Conversion Kits
Reloading Supplies
Brass
Bullets
Case Cleaning & Preparation
Dies & Shell Holders
Powder
Primers
Shooting Gear
Electronics
Gun Cleaning
Holsters & Pouches
Lights & Lasers
Optics & Sights
Safety & Protection
Slings & Attachments
Storage & Transport
Survival & Emergency
Targets & Training
Tools
Training Equipment
Suppressors
NFA Suppressors
Pistol
Rifle
Rimfire
Shotgun
Specialty
Suppressor Accessories
Subscribe Today! 1 Payment - 365 Days of Free Shipping
Catalog
​
Home
Firearms
Upper Receivers & Conversion Kits
Upper Receivers & Conversion Kits
Popular
​
Filters
Popular
​
Filters
Clear
Sales
Wholesale
(2)
Manufacturer
​
​
Radian Weapons
(19)
Sons of Liberty Gun Works
(15)
Lone Wolf Distributors
(12)
True Precision
(12)
Advantage Arms
(10)
Primary Weapons Systems
(10)
Sig Sauer
(10)
Allen
(9)
CMMG
(9)
Odin Works
(8)
LanTac USA LLC
(7)
Luth-AR
(7)
2A Armament
(6)
Mission First Tactical
(6)
Ballistic Advantage
(5)
Battle Arms Development
(5)
Mossberg
(5)
Rise Armament
(5)
Century Arms
(4)
Desert Tech
(4)
Rock River Arms
(4)
Daniel Defense
(3)
FN America
(3)
Fortis Manufacturing, Inc.
(3)
GPS
(3)
Grey Ghost Precision
(3)
Spike's Tactical
(3)
US PeaceKeeper
(3)
Yankee Hill Machine Co
(3)
Cole-TAC
(2)
DETROIT AMMUNITION COMPANY LLC
(2)
Gemtech
(2)
Grey Ghost Gear
(2)
LBE Unlimited
(2)
Nordic Components
(2)
Noveske
(2)
Phoenix
(2)
Primos
(2)
Sharps Bros.
(2)
Tactical Solutions
(2)
Troy
(2)
Aero Precision
(1)
Backup Tactical
(1)
Charles Daly
(1)
Chiappa Firearms
(1)
Colt's Manufacturing
(1)
Diamondback Firearms
(1)
Faxon Firearms
(1)
HK
(1)
Magnum Research
(1)
Ohio Ordnance Works, Inc
(1)
Rival Arms
(1)
Samson Manufacturing Corp.
(1)
Seekins Precision
(1)
SilencerCo
(1)
Ultradyne USA
(1)
ZEV Technologies
(1)
Zaffiri Precision
(1)
Type
Conversion Kits
(2)
Price
under $100.00
(173)
$100.00 - $200.00
(119)
$200.00 - $400.00
(57)
$400.00 - $600.00
(21)
$800.00 - $1000.00
(36)
$1000.00 - $2000.00
(26)
from $2000.00
(8)
(0)
AERO M4E1 ASSEMBLED UPPER ODG
$159.99
Add to Cart
(0)
AERO M4E1-T UPPER 5.56 16" BLK
$599.99
Add to Cart
(0)
AERO M4E1 ASSEMBLED UPPER KODIAK BRN
$159.99
Add to Cart
(0)
AERO M5 AR10 ASSEMBLED UPPER BLACK
$154.99
Add to Cart
(0)
AERO M5 AR10 ASSEMBLED UPPER FDE
$209.99
Add to Cart
(0)
AERO M5 AR10 ASSEMBLED UPPER KDK BRN
$154.99
Add to Cart
(0)
AERO AR15 STRIPPED UPPER BLACK
$104.99
Add to Cart
(0)
AERO AR15 ASSEMBLED UPPER FDE
$144.99
Add to Cart
(0)
AERO M5 UPPER 308WIN 16" BLK
$713.99
Add to Cart
(0)
BAD XIPHOS 9MM STPD UPPER RECEIVER
$249.99
Add to Cart
(0)
BAD WORKHORSE 556 UPPR 16" BLK N/BCG
$502.99
Add to Cart
(0)
BALLISTIC BA AR 15 UPPR RCVR
$124.99
Add to Cart
(0)
BALLISTIC BA ENHCD AR 15 UPPR RCVR
$159.99
Add to Cart
(0)
BALLISTIC BA10 UPPR RCVR
$194.99
Add to Cart
(0)
BLACK RAIN UPPER RECEIVER 223REM BLK
$215.99
Add to Cart
(0)
BLACK RAIN UPPER 458SOCOM 16" BLK
$950.99
Add to Cart
(0)
BOOTLEG BILLET AR 15 UPPER REC ASSMB
$182.99
Add to Cart
(0)
C.DALY AR 410 UPPER .410 19" 5RD
$368.99
Add to Cart
(0)
CMMG 22LR AR CONV KIT 10RD BRAVO
$163.99
Add to Cart
(0)
CMMG 22LR AR CONV KIT 25RD
$192.99
Add to Cart
(0)
CMMG 22LR AR CONV KIT 3-10RD BRAVO
$199.99
Add to Cart
(0)
CMMG 22LR AR CONV KIT 3-25RD BRAVO
$199.99
Add to Cart
(0)
CMMG 22LR AR CONV KIT SS 25RD EVO
$163.99
Add to Cart
(0)
CMMG UPPR RSLT MK4 350LEG 16.1" BLK
$831.99
Add to Cart
1
2
…
15
16
17
18
19
20
