Skip to main content
We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal NatchezDeal SitkaDeal 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Stores
Ar15a4 Upper Rcvr, Flattop, Mod. Carb by Colt - Receivers

Product Description

FITS: AR-15 - Common Parts

Ar15a4 Upper Rcvr, Flattop, Mod. Carb

at Brownells.com
Browse all Brownells.com deals
$129.99
Out of Stock
Buy Now at Brownells.com
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Category Receivers
Brand Colt
Colt

Shop more Colt Gun Parts

All 200 in-stock Colt Gun Parts from 16 stores →

More from Colt

Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M16 R0901 5.56 Complete Upper Receiver Groups - M16 Upper Group 20in M16 Handguard Stripped M16 R0901 5.56 Complete Upper Receiver Groups - M16 Upper Group 20in M16 Handguard Stripped View Details
$574.99
Buy Now · $574.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6933 Epr Upper Group 11.5in Stripped Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6933 Epr Upper Group 11.5in Stripped View Details
$729.99
Buy Now · $729.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6944 Upper Group 14.5in Stripped M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6944 Upper Group 14.5in Stripped View Details
$839.99
Buy Now · $839.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Upper Receiver Groups - M4 Le6933 Upper Group 11.5in With Bcg And Sights M4 5.56 Upper Receiver Groups - M4 Le6933 Upper Group 11.5in With Bcg And Sights View Details
$813.99
Buy Now · $813.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Upper Receiver Groups - M4 Le6921 Upper Group 14.5in Stripped M4 5.56 Upper Receiver Groups - M4 Le6921 Upper Group 14.5in Stripped View Details
$499.99
Buy Now · $499.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M16 R0901 5.56 Complete Upper Receiver Groups - M16 Upper Group 20in Moe Stripped M16 R0901 5.56 Complete Upper Receiver Groups - M16 Upper Group 20in Moe Stripped View Details
$499.99
Buy Now · $499.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Upper Receiver Groups - M4 Le6933 Upper Group 11.5'''' Stripped M4 5.56 Upper Receiver Groups - M4 Le6933 Upper Group 11.5'''' Stripped View Details
$444.99
Buy Now · $444.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6940 Upper Group 16in Stripped M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6940 Upper Group 16in Stripped View Details
$1070.99
Buy Now · $1070.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6921epr Upper Group 14.5in With Bcg Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6921epr Upper Group 14.5in With Bcg View Details
$994.99
Buy Now · $994.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6920epr Upper Group 16in With Bcg Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6920epr Upper Group 16in With Bcg View Details
$999.99
Buy Now · $999.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6943 Upper Group 11.5in With Bcg And Sights M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6943 Upper Group 11.5in With Bcg And Sights View Details
$1215.38
Buy Now · $1215.38
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6945 Upper Group 10.3in With Bcg And Sights M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6945 Upper Group 10.3in With Bcg And Sights View Details
$1349.99
Buy Now · $1349.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 Upper Receiver 5.56 Socom Barrel - M4 Socom Upper Group 14.5in Stripped M4 Upper Receiver 5.56 Socom Barrel - M4 Socom Upper Group 14.5in Stripped View Details
$541.99
Buy Now · $541.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M16 R0901 5.56 Complete Upper Receiver Groups - M16 Upper Group 20in Moe With Bcg & Charging Handle M16 R0901 5.56 Complete Upper Receiver Groups - M16 Upper Group 20in Moe With Bcg & Charging Handle View Details
$679.99
Buy Now · $679.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
M4 Upper Receiver Assembly No Handguards - Le6920 Upper Receiver 16 Barrel W/ Bcg & Charging Handle M4 Upper Receiver Assembly No Handguards - Le6920 Upper Receiver 16 Barrel W/ Bcg & Charging Handle View Details
$749.99
Buy Now · $749.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6933 Epr Upper Group 11.5in With Bcg. Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6933 Epr Upper Group 11.5in With Bcg. View Details
$974.99
Buy Now · $974.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
Ar15a4 Upper Rcvr Assembly, Carbine Ar15a4 Upper Rcvr Assembly, Carbine View Details
$175.99
Buy Now · $175.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
M4 5.56 Upper Receiver Groups - M4 Le6920 Upper Group 16in Stripped M4 5.56 Upper Receiver Groups - M4 Le6920 Upper Group 16in Stripped View Details
$495.99
Buy Now · $495.99
Brownells.com
Brownells.com
Last Updated:
Oct 11, 2026 01:13 AM
Sold Out
Ar-15 Le6960-Ccu Upper Receiver 5.56 M-Lok - Le6960-Ccu Upper Receiver 5.56 M-Lok Black Ar-15 Le6960-Ccu Upper Receiver 5.56 M-Lok - Le6960-Ccu Upper Receiver 5.56 M-Lok Black View Details
$659.99
Buy Now · $659.99
Brownells.com