--- title: "AERO PRECISION M4E1-T Complete AR15 Upper 14.5\" 5.56 Barrel w/ Pinned Gamma SL / 12\" MLOK Atlas R1" canonical_url: "https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano" meta: author: KYGUNCO "og:image": "https://cdn.kygunco.com/assets/products/228642/thumbnail.jpg?v=1713193084" "og:image:height": "500" "og:image:width": "500" "og:title": "AERO PRECISION M4E1-T Complete AR15 Upper 14.5\" 5.56 Barrel w/ Pinned Gamma SL / 12\" MLOK Atlas R1" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Upper Receivers](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/upper-receivers) / RPR-APAR700704M5V38 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/228642/main.jpg?v=1713193084) For illustration purposes only, this image may not be an exact representation of the product. # AERO PRECISION M4E1-T Complete AR15 Upper 14.5" 5.56 Barrel w/ Pinned Gamma SL / 12" MLOK Atlas R1 See Price In Cart ** 5 interest-free payments of **$120.40** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$107.47**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Item # 228642 Style RPR-APAR700704M5V38 UPC 840014618477 Condition New Manufacturer [Aero Precision](https://www.kygunco.com/brand/aero-precision) Weight 1 lb This complete upper includes our ATLAS R-ONE Handguard. The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. Whether you're an outdoor enthusiast or a professional, Gerber Knives has the tools you need to get the job done. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. **SPECIFICATIONS** - M4E1 Threaded Assembled Upper Receiver - ATLAS R-ONE Handguard of choice - 14.5" 5.56 Mid-Length CMV Barrel - Low Profile Gas Block and Mid Length Gas Tube - VG6 Precision GAMMA 556 SL (pinned and welded) - Product comes assembled - This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab #### **M4E1 Threaded Upper Receiver Features:** - New enhanced forging that gives the upper receiver a "billet look" - New picatinny profile that blends seamlessly with our Enhanced Series Handguards - M4 Feedramps - .250 takedown pin holes - Laser engraved T-marks - Includes port door and forward assist installed #### **ATLAS R-ONE Handguard Features:** - Full top picatinny rail for optional attachments - Quick disconnect sling socket at the 3, 6 and 9 o'clock positions - Compatible with low profile gas blocks - 1.3” Inside diameter - 1.5” Outside diameter - Compatible with mil-spec AR15 upper receivers and barrels #### **14.5" 5.56 Mid-Length Barrel Features:** - Chamber: 5.56 - Length: 14.5" - Twist: 1 in 7 - Threading: 1/2"x28 - Material: Chrome Moly Vanadium - Finish: QPQ corrosion resistant finish both inside and out - Gas Block: .750 - Gas Port: .0785 - Gas System Length: Mid - Weight: 26oz - M4 Barrel Extension - HP and MPI Tested ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Aero Precision ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano#webpage","@type":"WebPage","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"AERO PRECISION M4E1-T Complete AR15 Upper 14.5\" 5.56 Barrel w/ Pinned Gamma SL / 12\" MLOK Atlas R1","url":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano","about":{"@id":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano#/schema//kygunco"},"breadcrumb":{"@id":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano#breadcrumb"},"isPartOf":{"@id":"https://www.kygunco.com/#website"},"potentialAction":[{"@type":"ReadAction","target":["https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano"]}]},{"@id":"https://www.kygunco.com/#/schema/organization/kygunco","alternateName":"Kentucky Gun Company","currenciesAccepted":"USD","description":"Shop KYGUNCO for firearms, ammo, gun parts, optics, shooting accessories, and outdoor gear with online ordering and shipping options across the U.S.","email":"info@kygunco.com","foundingDate":"1946-01-01","hasMap":"https://www.google.com/maps/dir/?q=place_id:ChIJfwecWCBSaIgRguIjuoPha40","logo":"https://www.kygunco.com/logos/kygunco.svg","name":"KYGUNCO","priceRange":"$$","telephone":"+1-502-348-3594","url":"https://www.kygunco.com","@type":["Organization","LocalBusiness"],"address":{"@type":"PostalAddress","streetAddress":"401 Glenwood Drive","addressLocality":"Bardstown","addressRegion":"KY","postalCode":"40004","addressCountry":"US"},"contactPoint":{"@type":"ContactPoint","contactType":"Customer Service","telephone":"+1-502-348-3594","email":"info@kygunco.com","availableLanguage":"English","hoursAvailable":{"@type":"OpeningHoursSpecification","dayOfWeek":["https://schema.org/Monday","https://schema.org/Tuesday","https://schema.org/Wednesday","https://schema.org/Thursday","https://schema.org/Friday"],"opens":"09:00","closes":"17:00"}},"geo":{"@type":"GeoCoordinates","latitude":37.8032518,"longitude":-85.4252895},"hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","name":"Standard Return Policy","inStoreReturnsOffered":true,"merchantReturnDays":30,"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","returnMethod":["https://schema.org/ReturnByMail","https://schema.org/ReturnInStore"],"returnFees":"https://schema.org/FreeReturn","refundType":["https://schema.org/ExchangeRefund","https://schema.org/FullRefund","https://schema.org/StoreCreditRefund"],"applicableCountry":"US"},"hasOfferCatalog":{"@type":"OfferCatalog","name":"KYGUNCO Catalog","url":"https://www.kygunco.com/search"},"image":{"@id":"https://www.kygunco.com/#/schema/image/1"},"knowsAbout":["Firearms sales and transfers","FFL dealers and compliance","Optics and accessories","Outdoor and hunting equipment"],"openingHoursSpecification":[{"@type":"OpeningHoursSpecification","dayOfWeek":["https://schema.org/Monday","https://schema.org/Tuesday","https://schema.org/Wednesday","https://schema.org/Thursday","https://schema.org/Friday","https://schema.org/Saturday"],"opens":"09:00","closes":"18:00"}],"paymentAccepted":["Credit Card","Credova","Sezzle"],"sameAs":["https://x.com/kygunco","https://www.facebook.com/kentuckygunco","https://www.instagram.com/kygunco","https://www.youtube.com/@thekentuckygunco","https://rumble.com/c/KYGUNCO"]},{"@id":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano#product","@type":"Product","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","gtin":"840014618477","mpn":"APAR700704M5V38","name":"AERO PRECISION M4E1-T Complete AR15 Upper 14.5\" 5.56 Barrel w/ Pinned Gamma SL / 12\" MLOK Atlas R1","sku":"228642","additionalProperty":[],"brand":{"@type":"Brand","name":"Aero Precision"},"image":["https://cdn.kygunco.com/assets/products/228642/thumbnail.jpg?v=1713193084"],"mainEntityOfPage":{"@id":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano#webpage"},"offers":{"@type":"Offer","availability":"https://schema.org/OutOfStock","price":601.99,"priceCurrency":"USD","url":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano","itemCondition":"https://schema.org/NewCondition","priceValidUntil":"2027-12-30T00:00:00.000Z"},"weight":{"@type":"Mass","value":"1 lb"}},{"@id":"https://www.kygunco.com/product/aero-precision-apar700704m5v38-m4e1-t-complete-upper-14.5-5.56-mid-gamma-sl-ano#breadcrumb","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","name":"Home","item":"https://www.kygunco.com","position":1},{"@type":"ListItem","name":"Shooting","item":"https://www.kygunco.com/category/shooting","position":2},{"@type":"ListItem","name":"Gun Parts","item":"https://www.kygunco.com/category/shooting/gun-parts","position":3},{"@type":"ListItem","name":"Handgun & Rifle Parts","item":"https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts","position":4},{"@type":"ListItem","name":"Rifle Parts","item":"https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts","position":5},{"@type":"ListItem","name":"Upper Receivers","item":"https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/upper-receivers","position":6},{"@type":"ListItem","name":"RPR-APAR700704M5V38","position":7}]},{"@id":"https://www.kygunco.com/#/schema/image/1","@type":"ImageObject","contentUrl":"https://cdn.kygunco.com/assets/backdrops/facade.jpg","inLanguage":"en","url":"https://cdn.kygunco.com/assets/backdrops/facade.jpg"}]} ``` ## Sitemap See the full [sitemap](https://www.kygunco.com/sitemap.md) for all pages.