Sign inorRegister0

Brands
Guns
Ammunition
Magazines
Gun Parts
Shooting Gear
Optics
Knives
Reloading
Everything Else
Hot Deals

Rifle Caliber Conversion Kits

Newsletter Signup

Signup for discounts, hot exclusive products, and breaking gun news!

Email address

Customer Service

Contact Us
FFL Upload
Shipping/Returns/Store Policies
State Restrictions
Terms & Conditions
Privacy Policy
SMS Terms

Information

My Account
How to buy A Firearm Online
Financing Options
Shooting Surplus Affiliate Program
Blog

Questions? Need Help?

Call us: 800-727-6914
E-mail Us
Ruston, LA 71270
United States

Follow Us

Trusted Since 2013

A+ Rated · 35,000+ Reviews

Secure Checkout
256-bit SSL Encryption

© 2026 Shooting Surplus

Rifle Caliber Conversion Kits | Shooting Surplus

Home
Gun Parts
Rifle Parts
Rifle Caliber Conversion Kits

Rifle Caliber Conversion Kits

Filters

1 - 24 of 105 Results

Sort By:

Showing 1 - 24 of 105 results

‹‹ Prev12 3 4 5 ›Next ›

CMMG Bravo 22BA651 22LR Conversion for 5.56 223 AR Rifles Includes 3 Magazines

CMMG Bravo 22BA651 22LR Conversion for 5.56 223 AR Rifles Includes 3 Magazines

FitsAR-15Capacity25 rdTypeConversion Kit

List price$239.95Our price$162.16

CMMG Auto Sear Trip Kit 22ARC with Auto Trip and Anti Bounce Weight

CMMG Auto Sear Trip Kit 22ARC with Auto Trip and Anti Bounce Weight

FitsAR-15TypeConversion Kit

List price$61.96Our price$46.40

Redi-Mag Better-mag S&w .22 mag Adapter for Ar-15 M16 S&w M&p 15-22

Redi-Mag Better-mag S&w .22 mag Adapter for Ar-15 M16 S&w M&p 15-22

FitsM&PTypeMagazine Adapter

List price$61.99Our price$58.00

SilencerCo AC26 Osprey Octane Piston 9mm M13.5x1 LH Stainless Steel

SilencerCo AC26 Osprey Octane Piston 9mm M13.5x1 LH Stainless Steel

List price$89.00Our price$75.65

CMMG 22BA62F Bravo 22 LR Conversion Kit Includes Magazine

CMMG 22BA62F Bravo 22 LR Conversion Kit Includes Magazine

FitsAR-15TypeConversion Kit

List price$199.95Our price$166.02

J P Enterprises SCS Conversion Kit AR-15 Law Folding Adapters Silent

J P Enterprises SCS Conversion Kit AR-15 Law Folding Adapters Silent

FitsAR-15TypeBuffer Spring

List price—Our price$98.20

Ar Catch22 Ar-15 22lr S w M p 15-22 Clip On Magazine Adapter

Ar Catch22 Ar-15 22lr S w M p 15-22 Clip On Magazine Adapter

List price$7.99Our price$7.01

CMMG 22ARC Forward Assist Adapter Kit for Rifle Caliber Conversion

CMMG 22ARC Forward Assist Adapter Kit for Rifle Caliber Conversion

FitsAR-15TypeConversion Kit

List price$19.95Our price$14.44

Fightlite Industries MCR Magazine Adapter for MCR Platforms Magazine Changes

Fightlite Industries MCR Magazine Adapter for MCR Platforms Magazine Changes

TypeMagazine Adapter

List price$152.08Our price$127.05

CMMG Bravo 22LR Conversion Kit for 5.56 223 AR Platform Rifles Includes 3 Magazines

CMMG Bravo 22LR Conversion Kit for 5.56 223 AR Platform Rifles Includes 3 Magazines

FitsAR-15Caliber22 LRCapacity10 rd

List price$239.95Our price$178.89

Barrett MRAD 6.5 Creedmoor 17" Barrel Conversion Kit

Barrett MRAD 6.5 Creedmoor 17" Barrel Conversion Kit

List price$1,760.00Our price$1,591.81

Stern Defense Ar-15 Conversion Adapter for S&w .45AcP Magazines

Stern Defense Ar-15 Conversion Adapter for S&w .45AcP Magazines

List price—Our price$196.83

Ruger LC9 Conversion Kit 9mm Blued Barrel Slide Magazine Compatible LC380

Ruger LC9 Conversion Kit 9mm Blued Barrel Slide Magazine Compatible LC380

FitsLC9Capacity7 rd

List price$316.05Our price$264.04

Barrett MRAD Barrel Conversion Kit 6.5 Creedmoor 24 Inch Fluted Barrel

Barrett MRAD Barrel Conversion Kit 6.5 Creedmoor 24 Inch Fluted Barrel

List price$1,760.00Our price$1,590.64

Barrett MRAD .308 Win 24" Fluted Conversion Kit with Barrel Bolt Head and Magazine

Barrett MRAD .308 Win 24" Fluted Conversion Kit with Barrel Bolt Head and Magazine

List price$1,760.00Our price$1,590.64

Barrett MRAD Barrel Conversion Kit 300 PRC 26 SS Fluted with Barrett Brake

Barrett MRAD Barrel Conversion Kit 300 PRC 26 SS Fluted with Barrett Brake

List price$1,760.00Our price$1,590.64

Sig Sauer SRD Piston 45ACP M16x1 17-4 Stainless Steel Conversion Piston

Sig Sauer SRD Piston 45ACP M16x1 17-4 Stainless Steel Conversion Piston

TypeSuppressor PistonMaterialSS

List price$153.30Our price$115.26

Sig Sauer P365 Caliber Exchange Kit 380 ACP 3.10" Slide Polymer Frame SigLite Sights

Sig Sauer P365 Caliber Exchange Kit 380 ACP 3.10" Slide Polymer Frame SigLite Sights

FitsP365MaterialPoly

List price$419.29Our price$322.68

Barrett MRAD .308 WIN 17 Inch Fluted Barrel Conversion Kit

Barrett MRAD .308 WIN 17 Inch Fluted Barrel Conversion Kit

List price$1,760.00Our price$1,590.64

Stern Defense Ar-15 9mm Conversion Adapter Glock Magazines

Stern Defense Ar-15 9mm Conversion Adapter Glock Magazines

FitsGlockTypeMagazine Adapter

List price$201.11Our price$168.01

Sig Sauer Suppressor Piston .578x28 TPI for SRD45 Compatibility

Sig Sauer Suppressor Piston .578x28 TPI for SRD45 Compatibility

List price—Our price$949.99

Chiappa Firearms 970.387 X-Caliber Set of 8 Gauge Adapters for 12 Gauge Shotgun

Chiappa Firearms 970.387 X-Caliber Set of 8 Gauge Adapters for 12 Gauge Shotgun

TypeGauge Adapter

List price$410.00Our price$343.49

CMMG 22BA60F Bravo Conversion Kit 22 LR Stainless Steel Fits AR-15 223 5.56

CMMG 22BA60F Bravo Conversion Kit 22 LR Stainless Steel Fits AR-15 223 5.56

FitsAR-15MaterialSS

List price$169.75Our price$141.81

Cva QRBP Variflame Conversion Kit for Most Cva Rifles Priming Tools Included

Cva QRBP Variflame Conversion Kit for Most Cva Rifles Priming Tools Included

TypeMuzzleloader Accessory

List price$90.00Our price$59.01