Sign inorRegister0

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

Home
Gun Parts
Rifle Parts
Rifle Caliber Conversion Kits

Rifle Caliber Conversion Kits

Filters

49 - 72 of 105 Results

Sort By:

Showing 49 - 72 of 105 results

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

‹‹ Prev 1 234 5 ›Next ›

Barrett MRAD .338 Lapua Magnum 26 Inch Fluted Conversion Kit

Barrett MRAD .338 Lapua Magnum 26 Inch Fluted Conversion Kit

List price$1,565.00Our price$1,391.81

Barrett MRAD .300 Win Mag 24 Inch Fluted Barrel Conversion Kit

Barrett MRAD .300 Win Mag 24 Inch Fluted Barrel Conversion Kit

List price$1,565.00Our price$1,391.81

Sig Sauer 9MM Luger P320 Compact Caliber X-Change Kit High Capacity

Sig Sauer 9MM Luger P320 Compact Caliber X-Change Kit High Capacity

List price$399.99Our price$343.38

IWI Tavor X95 300BLK 16.5 Conversion Kit 30-Round Magazine

IWI Tavor X95 300BLK 16.5 Conversion Kit 30-Round Magazine

FitsTavorCaliber300 BLKBarrel16.5"

List price$899.00Our price$794.15

CMMG 22LR AR Echo Conversion Kit for Standard AR Platform

CMMG 22LR AR Echo Conversion Kit for Standard AR Platform

List price$229.95Our price$196.77

Spikes Tactical 37mm to 26.5mm Flare Adapter for Rifle

Spikes Tactical 37mm to 26.5mm Flare Adapter for Rifle

List price—Our price$28.66

Rock River Arms 9mm Magwell Conversion Block Ar-15 9mm Magazine Compatibility

Rock River Arms 9mm Magwell Conversion Block Ar-15 9mm Magazine Compatibility

List price$257.99Our price$226.75

CMMG 22BA6E1 Bravo 25rd Magazine Compatible with 5.56/.223 Rifles

CMMG 22BA6E1 Bravo 25rd Magazine Compatible with 5.56/.223 Rifles

FitsAR-15TypeConversion Kit

List price$199.95Our price$147.36

CAA MICRO CONVERSION KIT - MCKGB

CAA MICRO CONVERSION KIT - MCKGB

List price—Our price$35.09

Hahn Precision Dedicated 9mm Conversion Block for AR-15

Hahn Precision Dedicated 9mm Conversion Block for AR-15

List price$279.99Our price$246.05

Sig Sauer MCX-SPEAR LT 300 AAC Blackout Conversion Kit 9''

Sig Sauer MCX-SPEAR LT 300 AAC Blackout Conversion Kit 9''

FitsMCXCaliber300 BLK

List price—Our price$2,038.60

Chiappa Firearms X-Caliber Adapter Set for SAAMI Spec Break Open 20 Gauge Shotgun

Chiappa Firearms X-Caliber Adapter Set for SAAMI Spec Break Open 20 Gauge Shotgun

Capacity1 rdTypeBarrel AdapterMaterialSteel

List price$236.35Our price$183.24

Maxim Defense 300blk SBSNC 190gr Sb Blem Rifle Caliber Conversion Kit

Maxim Defense 300blk SBSNC 190gr Sb Blem Rifle Caliber Conversion Kit

List price$41.95Our price$36.33

Barrett MRAD .308 Win 22 Conversion Kit Stainless Steel Fluted Barrel Bolt Magazine

Barrett MRAD .308 Win 22 Conversion Kit Stainless Steel Fluted Barrel Bolt Magazine

FitsMRADMaterialSS

List price$1,565.00Our price$1,391.81

Sig Sauer MCX-SPEAR LT AR Conversion Kit 5.56 NATO 16''

Sig Sauer MCX-SPEAR LT AR Conversion Kit 5.56 NATO 16''

FitsMCXCaliber5.56x45 NATO

List price—Our price$2,038.60

Hahn Precision 9mm Adapter for KE Arms KP-15 Caliber Conversion

Hahn Precision 9mm Adapter for KE Arms KP-15 Caliber Conversion

List price—Our price$168.42

Colt Ar-15 Pivot Pin Assembly Conversion Kit for Ar-15 Receivers

Colt Ar-15 Pivot Pin Assembly Conversion Kit for Ar-15 Receivers

List price$23.99Our price$17.18

Caa Micro Conversion Kit Polymer Matte Push Button Swivel For Rifles

Caa Micro Conversion Kit Polymer Matte Push Button Swivel For Rifles

List price$20.00Our price$14.04

Primary Weapons Systems UXR Conversion Kit 6.5 Creedmoor 18in for UXR

Primary Weapons Systems UXR Conversion Kit 6.5 Creedmoor 18in for UXR

Caliber6.5 CMBarrel18"

List price$575.00Our price$451.39

Sig Sauer MCX-SPEAR LT AR Conversion Kit 7.62x39mm 16''

Sig Sauer MCX-SPEAR LT AR Conversion Kit 7.62x39mm 16''

FitsMCXCaliber7.62x39

List price—Our price$2,038.60

ATI Magazine Adapter 9mm Fits Glock 3 Pack 9mm Luger Conversion

ATI Magazine Adapter 9mm Fits Glock 3 Pack 9mm Luger Conversion

FitsGlockCaliber9mm

List price$14.98Our price$12.51

Just Right Carbine JRC Conversion Kit 45 ACP 17 in Threaded Glock Mag

Just Right Carbine JRC Conversion Kit 45 ACP 17 in Threaded Glock Mag

List price$268.00Our price$231.58

Charles Daly Cdly AR 410 Upper .410GA 19in Semi Automatic for AR15 Lower

Charles Daly Cdly AR 410 Upper .410GA 19in Semi Automatic for AR15 Lower

List price—Our price$369.59

Daniel Defense Delta 5 Barrel Kit 24in 6.5 Creedmoor Modular Barrel

Daniel Defense Delta 5 Barrel Kit 24in 6.5 Creedmoor Modular Barrel

List price$703.00Our price$655.00