Custom CMMG MOD4 SA .223/5.56 NATO Semi-Auto Rifle AR15 w/Thermal Scope
SOLD FOR: $1,051.67
LSB#: LSB260507EO026
Make: CMMG
Model: MOD4 SA
Serial Number: SA27919
Year of Manufacture: Modern
Caliber: .223 / 5.56 NATO
Barrel Length & Twist: 20″ / 1:9, threaded, with A2-style flash hider
Action Type: Semi-Automatic, Direct-Impingement Rifle Fed by Detachable AR-Pattern Magazines
Sights / Optics: The optic is an ATN ThOR LT 4-8x Thermal Scope attached to a quick detach cantilever bracket mounted to a flat-top picatinny rail. We cannot guarantee the functionality or accuracy of the optic. The optic is not powering on and may need to be charged.
Stock Configuration & Condition: The furniture on this rifle includes a 15″ Midwest Industries MLOK free floating handguard with a QD sling point attached to the left and right side, a sling stud attached to the bottom. The pistol grip is a cobblestone textured Hogue Grip. The buttstock is a Magpul PRS Gen 3 with an adjustable comb and adjustable buttpad. There is a sling loop and QD point on the right side of the buttstock. There are minor handling scuffs. The LOP measures 14 3/8″ from the front of the trigger to the rear of the buttpad at its shortest setting. Overall, the stocks rate in Fine condition.
Magazine Quantity & Condition: 3x 30-round metal and 1x 20-round PMAG magazines with moderate operational wear and remain in Fine condition.
Type of Finish: Black Anodized Hard Coat
Finish Originality: Original
Bore Condition: The bore is bright and the rifling is sharp. There is no erosion in the bore. In this writer’s opinion, the bore rates about 9.5/10.
Overall Condition: This rifle retains about 97% of its original metal finish. There are minor scattered handling scuffs and superficial scratches and dings. The markings are clear and legible. The pins are unmarred. Overall, this rifle rates in Excellent condition.
Mechanics: The action functions correctly, as does the safety. We did not fire this rifle. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements. There is a Geissele 2-stage trigger installed, Radian Raptor Ambi charging handle, Sharps Rifle Co. BCG, as well as extended take-down pins.
Box, Paperwork & Accessories: Installed scope, soft case, and 4 total magazines.
Our Assessment: CMMG’s MOD4-series rifles were developed around the traditional AR-15 operating system and offered in sporting, tactical, and precision-oriented configurations. This custom MOD4 SA uses a 20″ barrel with a 1:9″ twist, a combination commonly selected to provide added velocity and practical stability with a broad range of conventional .223 Remington and 5.56 NATO projectiles. Its free-floating Midwest Industries handguard, Geissele two-stage trigger, Magpul PRS Gen 3 stock, Radian Raptor ambidextrous charging handle, and Sharps Rifle Company bolt-carrier group give the rifle a precision-focused configuration while retaining familiar AR-15 controls and direct-impingement operation. The installed ATN ThOR LT thermal optic further adapts the rifle for low-light observation, predator control, and other specialized field applications.
This custom CMMG retains approximately 97% of its metal finish, with minor handling scuffs, superficial scratches, and small dings. The Midwest Industries handguard, Hogue grip, and Magpul stock remain in Fine condition, while the bright 9.5/10 bore has sharp rifling and no visible erosion. The action and safety function correctly, and the rifle includes a Geissele two-stage trigger, Radian Raptor ambidextrous charging handle, Sharps Rifle Company bolt-carrier group, extended takedown pins, soft case, three 30-round metal magazines, and one 20-round PMAG. The ATN ThOR LT thermal optic is not currently powering on, and its operational condition is unknown. Please see our photos for a better understanding of the condition and good luck with your bids! -MY