Description Mil-Spec lower receiver with enhanced flared magazine well and rear receiver QD swivel attachment point. CNC machined. Type III hard coat anodized. Mil-Spec upper receiver with indexing marks and M4 feed ramps. CNC machined. Type III hard coat anodized. Chrome Moly Vanadium steel, cold hammer forged threaded barrel (1/2x28 TPI), 1:7 twist, government profile, mid-length gas system, chrome lined, MP tested and Mil-Spec heavy phosphate coated. Pinned low profile gas block CNC machined of 4140 hardened steel and Mil-Spec heavy phosphate coating, mid-length, direct impingement. Daniel Defense Flash Suppressor, salt bath Nitride finished. M16 profile bolt carrier group is Mil-Spec MP Tested, chrome lined, Properly Staked Gas Key. H buffer. No sights. Daniel Defense MFR XS 15.0 handguard is CNC machined of 6061-T6 Aluminum, M-LOK attachment. Six position Mil-Spec 7075-T6 Aluminum receiver extension. Daniel Defense buttstock and pistol grip, glass filled polymer with Soft Touch Overmolding. DD magazine. Includes Daniel Defense Full-Latch Impact Plastic Case. Made in the USA.Specifications:Barrel Length: 16Caliber-Gauge: .223 REM.Capacity: 32Finish: BlackLong Gun Web Model: Model M4Made in the USASpecific Caliber: 5.56mm NATOTacticalThreaded Barrel Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.