WARNING: Do not use power tools for this installation. Doing so, you risk stripping the hex screw head. Taking the time to use the included wrench will save you headaches, time, and possibly money. We will not warranty any damage done by using power

<h3 id="how-to-install-the-ep-adjustable-receiver-extension">How to Install the EP Adjustable Receiver Extension</h3><p><strong>WARNING: Do not use power tools for this installation. Doing so, you risk stripping the hex screw head. Taking the time to use the included wrench will save you headaches, time, and possibly money. We will not warranty any damage done by using power tools for this installation.</strong></p><p><strong><span class="fr-video fr-deletable fr-rv fr-fvc fr-dvb fr-draggable" contenteditable="false" draggable="true"><iframe width="100%" src="https://player.vimeo.com/video/786355590" frameborder="0" allowfullscreen class="fr-draggable"></iframe></span></strong><br></p><h3 id="remove-the-factory-pistol-receiver-extension">Remove the Factory Pistol Receiver Extension:</h3><ul><li>Remove the brace from your pistol.<ul><li>For the Extar Stabilizer, pull straight back to remove the brace.</li><li>For SB Tactical Braces, direct compressed air into the hole in the back of your brace then slide it off.</li></ul></li><li>Field strip your pistol by removing the upper from the lower then set the upper aside.</li><li>Remove the Buffer Retainer by depressing the buffer slightly and then using your finger or a tool to slide the retainer straight up and out then set aside the buffer and spring.</li><li>Locate the Back Retainer (Metal plate holding the Receiver Extension on) Bolt from inside the QD socket.</li><li>Using the included hex key, remove the bolt. <u>NOTE: The first turn may take quite a bit of effort as they come tight from the factory.</u></li><li>Once you have unscrewed the bolt, slide the Back Retainer off of the tube and set it aside.</li><li>Pull the Receiver Extension off.</li></ul><h3 id="install-the-adjustable-receiver-extension">Install the Adjustable Receiver Extension:</h3><p><img src="https://uploads.gorgias.io/z8QbV2PkJn6ogePy/adjustabletubediagram-88700817-cca0-42b6-97ab-a50aa85ccb36.jpg" style="width: 300px;" class="fr-fic fr-dib"></p><ul><li>Take the Back Retainer and slide it onto the Adjustable Receiver Extension with the QD socket facing the adjustment track.</li><li>Put the included o-ring on the receiver extension and nest it in the space between the two ridge portions on the tube, past the groove portion.</li><li>Install the split ring on the receiver extension with the tapered side going toward the adjustment track and the flat side going toward the lower receiver. Locking it into place in the groove mentioned in the last step.</li><li>With the split ring in place, roll the o-ring down and over the ring.</li><li>Slide down the retainer plate over the o-ring and split ring.</li><li>Lining up the receiver extension with the lower receiver, push the receiver extension into place. <u>NOTE: These two parts may be tight-fitting. Try slightly turning and shifting the tube against the lower to help the lock-up notches line up with the lower receiver.</u></li><li>Now align the hole in the Back Retainer with the threaded hole in the lower and insert the Back Retainer Bolt.</li><li>Start the bolt by hand if you can, and then use the included hex key to tighten it down, ensuring to firmly press the key into the bolt face in order to avoid stripping the bolt.</li><li>Hand-tighten the bolt using the leverage of the long end of the wrench.</li><li>Now, reassemble your pistol in the reverse order and perform a function check.</li></ul><p><em id="isPasted" style="box-sizing: border-box; font-style: italic; line-height: inherit; -webkit-font-smoothing: antialiased; outline: 0px !important; color: rgb(90, 90, 90); font-family: Saira, Arial, Helvetica, sans-serif; font-size: 15px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><u>Disclaimer: Firearms with barrels under 16&#x201D; cannot have a buttstock without being considered a Short Barreled Rifle (SBR). The manufacture of SBRs is generally lawful when performed after the receipt of a properly submitted ATF Form 1 (application to make and register a firearm) and submission of a $200.00 making tax payment. State and Local Laws supersede NFA controls. Title 27 CFR Chapter II Section 479.52.</u></em></p>

EP Adjustable Receiver Extension Installation Instructions

WARNING: Before starting, ensure that your firearm is unloaded and that the area is clear of all ammunition.

<h3 id="how-to-install-ep9-rifle-length-upper">How to Install EP9 Rifle-Length Upper</h3><p><strong>WARNING: Before starting, ensure that your firearm is unloaded and that the area is clear of all ammunition.</strong></p><p><strong><span class="fr-video fr-deletable fr-rv fr-fvc fr-dvb fr-draggable" contenteditable="false" draggable="true"><iframe width="100%" src="https://player.vimeo.com/video/803207746?h=cc0a9e430f" frameborder="0" allowfullscreen class="fr-draggable"></iframe></span></strong><br></p><h3 id="stripping-your-current-upper">Stripping Your Current Upper</h3><ul><li>Field strip your pistol by removing the upper from the lower, then set the lower aside.</li><li>Pull the charging handle back until the bolt is protruding, then remove the bolt and set it aside.</li><li>Pull the charging handle all the way to the end of its track in the upper, then pull it out.</li><li>Using the end of the charging handle, push on the charging handle slider block through the track in the upper until the block is protruding from the upper.</li><li>Remove the charging handle slider block and set it aside.</li><li><strong><u>For EP9s with a Blast Director muzzle device:&#xA0;</u></strong>Unscrew the blast director from the muzzle and set it aside, then take off and set aside the split lock nut.</li><li>Using a Phillips head screwdriver, unscrew the two handguard screws and then pull the handguard off.</li><li>Set aside your pistol upper.</li></ul><h3 id="assembling-the-ep9-rifle">Assembling the EP9 Rifle</h3><ul><li>Take your handguard and rifle-length upper.</li><li>Put the handguard on over the barrel and mount it up to the barrel nut, taking care to ensure that the front hook on the picatinny style rail properly lines up with the handguard.</li><li>Using a Phillips head screwdriver, install the two handguard screws and hand-tighten them. (DO NOT USE POWER TOOLS FOR THIS STEP)</li><li>With the angled corner pointing towards the upper, install the charging handle slider block and push it forward until the hole for the handle is in the center of the open portion. (reference photo)<img src="https://uploads.gorgias.io/z8QbV2PkJn6ogePy/Charging_Handle_INST-4a70547b-8e9d-402e-8cc7-d5031b3df6e0.jpg" style="width: 300px;" class="fr-fic fr-dib"></li><li>Insert the charging handle and move the handle forward.</li><li>Insert the bolt all the way into the upper.</li><li>Put the upper on the lower and push in the takedown pin.</li><li>Function check that the bolt is cycling properly and that the trigger functions and you are all set!</li></ul>

EP9 Rifle-Length Upper Installation

<h3 id="ep9-handguard-replacement-demonstration">EP9 Handguard Replacement Demonstration.</h3><p><span class="fr-video fr-deletable fr-rv fr-fvc fr-dvb fr-draggable" contenteditable="false" draggable="true"><iframe width="100%" src="https://player.vimeo.com/video/803215094?h=55154355f0" frameborder="0" allowfullscreen class="fr-draggable"></iframe></span><br></p>

EP9 Handguard Replacement

WARNING: Before starting, ensure that your firearm is unloaded and that the area is clear of all ammunition. (IF BRACE IS INSTALLED):. Before installing the EP Pistol Protective Cover, remove the brace on your EP9. The EP9 has only shipped with brace

<h1 id="how-to-install-the-ep-pistol-protective-cover">How To Install the EP Pistol Protective Cover</h1><p><strong id="isPasted">WARNING: Before starting, ensure that your firearm is unloaded and that the area is clear of all ammunition.</strong></p><p><strong id="isPasted">(IF BRACE IS INSTALLED):</strong></p><p>Before installing the EP Pistol Protective Cover, remove the brace on your EP9. The EP9 has only shipped with braces that are fit by friction. Removing the brace should be a simple process:</p><ul><li>For the Extar Stabilizer, pull straight back to remove the brace.</li><li>For SB Tactical Braces, direct compressed air into the hole in the back of your brace then slide it off. If you do not have an air compressor, it can be removed by pulling with enough force.</li><li><strong>After removing the brace:&#xA0;</strong>Remove the indexing key from the back of the receiver extension. It can be pulled straight off with a slight wiggle to assist.<img src="https://uploads.gorgias.io/z8QbV2PkJn6ogePy/IMG_1526-bc0c3790-427f-481c-b96f-c3bf23361ecb.jpg" style="width: 516px;" class="fr-fic fr-dib"></li></ul><p>To Install the EP Pistol Protective Cover:</p><ul><li>Now that your receiver extension is bare, take the foam cover and push it onto the receiver extension. It may help to stand the pistol up on the muzzle and then push down, with a slight turning movement in order to slide the foam on.</li><li>With the foam cover on, push on the rear cap.</li></ul><p>You are all done! Happy shooting.</p><p><br></p><p><br></p>

EP Pistol Protective Cover Installation

EP9 & EP45 Trigger Group Replacement

EP45 Charging Handle Installation

Installation Instructions