Knights Armament Upper Receiver kit, SR-25 6.5 APR, 22″ barrel, URX4 M-LOK

Barrel: 22” (55.9cm) Mid-weight Precision profile, 1:8 RH Twist, dimpled barrel

Caliber: 6.5mm CREEDMOOR

Weight: 6.9lbs (3.12kg)

Length: 33” (83.82cm) upper receiver only

The MCX SPEAR LT developed for the SF community is the most advanced platform of its kind. Convert any M4/AR15 platform into a modernized folding firearm with superior reliability, durability, and accuracy.

Features:

Adapts with any M4/AR15 Spec Lower Assembly
Dual Rod Recoil Assembly Eliminates Buffer System
M4 Adapter allows for Pic Rail Folding Stock Capabilities
Adjustable Gas System for Suppressor Optimization
Quick Change Barrel Design allows to easily swap calibers and barrel lengths
Gas Piston Design Reduces Part Exposure to Carbon Fouling
Designed to go 20k rounds before any part replacements
SLX/SLH Next Gen Suppressor Designed QD Flash Hider for Clutch-Lok Adaptability
Ambidextrous Charging Handle with Gas Deflector
Replaceable parts (Cam Path Follower, Feed Ramp, Forward Assist/Deflector, Charging Handle Locking Pins) allow for longer receiver life over standard AR designs.
Tapered Bolt Design Functions More Reliably and Lasts Longer than standard Square Lug M4 Bolt Designs.
Nitride Coated Cold Hammer Forged Barrel for optimal accuracy and barrel life

Included items:

Complete 11.5″ 7.62×39 upper assembly includes our removable 3-prong flash-hider ready to accept our SLH & SLX suppressor systems.
Receiver extension delete stock adapter so you may mount any folding or static stock or brace that uses a vertical 1913 rail system.
Increased weight hammer spring for AR-15 mil-spec hammers.
Note: To ensure reliable ignition of all varieties of 7.62×39 ammunition, please use the included heavy-weight hammer spring for mil-spec AR-15 hammers.

Requires the use of AR-15 7.62×39 compatible magazines