FINAL DAYS - Hurry To Grab These Memorial Day Deals!
Take 12% Off Almost Everything w/ Code: MEM12

FINAL DAYS - Memorial Day Deals!
Take 12% Off Almost Everything w/ Code: MEM12

 Daily Deal: Browning American Wings T-Shirt - $19.99 $9.99!

6294 Brownells Banners - Week 11 - Category Header_Geissele
6294 Brownells Banners - Week 11 - Category Header_Geissele Mobile

THE GOLD STANDARD
OF AR UPGRADES!

Shop Geissele Uppers,
Triggers, and Upgrades!
Save Up To 29% Now!
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero Mobile(1)

BROWNELLS BRN-180® GEN3

You've Been Waiting - Don't Miss Out Again!
Back In Stock!

Rifle Caliber Conversion Kits

8 Items

Rifle Caliber Conversion Kits Up To 15% Off— 8 Products In Stock / 5 Models

Our Rifle Caliber Conversion Kits lineup includes 8 in-stock products selected from the brands serious shooters and outdoorsmen rely on. Enjoy savings Up To 15% Off on qualifying orders, and all Brownells brand products backed by our Forever Guarantee®.

You'll find options across from 6 premium brands like STERN DEFENSE, LLC, HOGUE, CMMG, BROWNELLS, with detailed specs to help you compare quality, materials, and performance. Verified buyers give our Rifle Caliber Conversion Kits 4.4 Ratings out of 288 Reviews from verified buyers, a strong signal you can shop with confidence.

Whether you are gearing up for the range, the field, or daily carry, we stand behind every Rifle Caliber Conversion Kits product we ship. Visit our full Rifle Parts category for the complete selection of related gear.

Sort by:
8 Total Products
You're viewing results for:
Products:  1  –  9  of 9
Number of results: 
  • 32
  • 64
  • 96
Product badge CMMG - AR-15/M16 22LR BRAVO CONVERSION KITS CMMG - AR-15/M16 22LR BRAVO CONVERSION KITS
5 Stars
(4.5)

$157.99 - $189.99

$184.99

Select Items In Stock
Product badge STERN DEFENSE, LLC - AR-15 9MM CONVERSION ADAPTER STERN DEFENSE, LLC - AR-15 9MM CONVERSION ADAPTER
5 Stars
(4.7)

$161.99 - $167.99

$179.99 - $186.99

In stock
BROWNELLS - AR-15 EJECTION PORT COVER SPRINGS BROWNELLS - AR-15 EJECTION PORT COVER SPRINGS
5 Stars
(4.2)

$3.99 - $6.99

In stock
BOONIE PACKER PRODUCTS - AR-15/M16 BETTER-MAG S&W M&P 15-22 MAGAZINE CONVERSION ADAPTER BOONIE PACKER PRODUCTS - AR-15/M16 BETTER-MAG S&W M&P 15-22 MAGAZINE CONVERSION ADAPTER
5 Stars
(3.6)

$61.99

In stock
HOGUE - AR-15 FREEDOM FIGHTER FIXED MAGAZINE CONVERSION KIT HOGUE - AR-15 FREEDOM FIGHTER FIXED MAGAZINE CONVERSION KIT
5 Stars
(4.5)

$55.21

In stock
Product badge STERN DEFENSE, LLC - AR-15 M&P 45ACP CONVERSION ADAPTER STERN DEFENSE, LLC - AR-15 M&P 45ACP CONVERSION ADAPTER
5 Stars
(5.0)

$167.99

$186.99

In stock
CMMG - 22ARC STAINLESS STEEL BRAVO RECEIVER FRAME CMMG - 22ARC STAINLESS STEEL BRAVO RECEIVER FRAME
5 Stars
(0.0)

$47.69

Online Only - Special Order. Please allow 4-5 weeks additional processing time.
HOGUE - AR-15 FREEDOM FIGHTER FIXED MAGAZINE CONVERSION REFILL KIT HOGUE - AR-15 FREEDOM FIGHTER FIXED MAGAZINE CONVERSION REFILL KIT
5 Stars
(0.0)

$38.21

In stock
COLT - AR-15/M16 9MM DEDICATED CONVERSION BLOCK COLT - AR-15/M16 9MM DEDICATED CONVERSION BLOCK
5 Stars
(4.5)

$119.99

Out of Stock
Products:  1  –  9  of 9