Colt
Colt LE6920 EPR Complete Upper (16" M-LOK)
Colt's M4A1-TDP upper with a Centurion Arms 13" M-LOK free-float rail. Drop-on for any mil-spec lower.
Quick Specs
- Price
- $1,149
- Weight
- 3 lb 12 oz
- Brand
- Colt
- Category
- upper
Features
- •5.56 NATO / .223 Rem, 16" chrome-lined barrel, 1:7 twist
- •Carbine-length gas, 1/2x28 muzzle threads
- •Centurion Arms CMR 13" M-LOK free-float handguard
- •Colt mil-spec BCG (chrome-lined carrier and gas key) and charging handle
- •MBUS Pro folding sights front and rear
Capability Boosts
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Colt AR-15 .223 Remington/5.56x45mm NATO 16in Upper Receiver, M4, Carbine Length, 1-7, 1/2x28, Parkerized, Black, LE6920EPR-CK
Compatibility Tags
Overview
The LE6920EPR-CK is Colt's complete upper assembly built around the same M4A1 Technical Data Package barrel, bolt carrier group, and charging handle Colt produced under the U.S. military M4 contract, paired with a Centurion Arms CMR 13-inch free-float M-LOK handguard. The barrel is mil-spec chrome-moly steel, magnetic-particle inspected, fully chrome lined, and finished with a 1/2x28 threaded muzzle and standard A2 birdcage. The upper receiver is 7075-T6 aluminum with Type III hard-coat anodizing, M4 feed ramps, white T-marks, and an interior gray dry-lube coating. The included BCG uses Colt's mil-spec chrome-lined gas key and properly staked Grade 8 fasteners. This is the right answer for an existing LE6920 owner who wants to upgrade to a free-float, M-LOK platform without buying a whole new rifle, and it drops directly onto any standard mil-spec AR-15 lower.
Key Features
- 16" mil-spec chrome-lined barrel with M4 profile, 1:7 twist
- Carbine-length gas system with low-profile gas block
- 1/2x28 threaded muzzle with A2 birdcage flash hider installed
- Centurion Arms CMR 13" free-float M-LOK rail with full-length top Picatinny
- Colt mil-spec BCG with chrome-lined carrier and properly staked gas key
- Colt mil-spec charging handle
- MBUS Pro folding backup sights (front and rear) included
- M4 feed ramps machined into upper and barrel extension
Pros
- +Same Colt M4A1-TDP barrel and BCG quality as the LE6920 rifle
- +Centurion CMR rail is a high-quality free-float upgrade over MOE polymer
- +Drops on any mil-spec lower, no gunsmithing required
- +Includes BCG, charging handle, and MBUS Pro sights (no extra purchases needed)
- +M-LOK accessory mounting at 3, 6, 9 o'clock positions
Cons
- −Heavier 13" rail adds weight versus minimalist M-LOK options
- −A2 birdcage is fine but not suppressor-ready without a swap
- −Carbine-length gas runs hotter than mid-length on a 16" barrel
- −Premium pricing for an upper-only assembly versus full rifle alternatives
Detailed Specifications
- forging
- 7075-T6 aluminum upper receiver
- Material
- Mil-spec chrome-moly steel barrel, MPI tested, fully chrome lined
- finish
- Type III hard coat anodized receiver, mil-spec phosphate barrel
- forwardAssist
- Yes
- shellDeflector
- Yes
- barrelLength
- 16"
- gasSystem
- Carbine-length
- twist
- 1:7
- handguard
- Centurion Arms CMR 13" M-LOK free-float
- bcg
- Colt mil-spec, chrome-lined carrier and gas key
- chargingHandle
- Colt mil-spec
- sights
- MBUS Pro folding (front and rear) included
- threadPitch
- 1/2x28
- muzzleDevice
- A2 birdcage flash hider
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Build Your Custom Configuration
Add the Colt LE6920 EPR Complete Upper (16" M-LOK) to your build and see how it enhances your platform.