![]() This is an outstanding carbine that is designed by competition shooters for maximum performance, but still capable of in home personal defense and other tactical situations. ( FigD) This part is designed to push the spent shell casing off the bolt face. Like all of our rifle products, MPA uses 416R SS match-grade button-rifled 1-10” twist 9mm barrels to ensure that the AR9 meets our stringent quality and accuracy requirements. The ejector is the metallic hooked extension that sits just behind the magazine on the TAC-9. ![]() The AR9 is also an excellent suppressor host with minimal gas blowback and enhanced accuracy over other designs. During the T&E process, multiple buffer and recoil systems were tested and evaluated, and we chose the best performing combination that enhances the shootability of the rifle that puts it a tier above the competition. The AR9 proprietary bolt carrier group with heavy-duty claw extractor and plunger ejector is tuned for exceptional reliability and has been optimized in weight for less reciprocating mass which equals a flatter and softer shooting platform. Spare Parts for AR-9/40 Style Upper and Lower Receivers Showing all 22 results Bolt Catch Threaded Pin / Mag Catch Pin (C4, C9, C5, C45, C10) SKU: SPL-SCREW1 5.99 Add to cart Ejector (C9, C45) SKU: SPL-PCEJECTOR 3.99 Add to cart Upper Tension Screw w/Nylon Tip (G15, C4, C9, C5, C45, C10) SKU: SPL-SCREW2 1. The MPA AR9 closed-bolt blowback operating system is soft shooting and reliable with a wide variety of 9mm loads and exhibits flawless feeding with all common pistol bullet profiles, including hollow point and ball ammunition. The Lower Receiver has a proprietary magazine catch assembly and ejector but uses standard AR15 hammer & trigger along with the safety with mag release button. ![]() Our new 7075 billet-machined aluminum receiver models also accept standard AR accessories like furniture, triggers, charging handles, buttstocks and optics, and incorporate an integral trigger guard and flared magwell for fast reloading. Our design team has designed our AR9 lower receivers that are compatible with the Glock pattern magazines in 9mm. I really am scratching my head on this, all help is welcome.The MPA AR9 PCC has been specifically designed for superior reliability and maximum accuracy, while retaining the familiar handling and controls of the AR platform. Its carbine is also 9 mm so have each and every advantage. After going a lot of successful model of handguns, this is exactly the same as the user required and expect form the AR9 carbine guns. I have included a screen grab from a video of me shooting and a photo of the complete weapon. One of the best things is its dual size bolt release, mag ejector, and handle for both the left and right-handed users, totally adjustable for any user. If anyone has experience troubleshooting at wants to fill me in I could buy lunch (or some cold ones after range time). I figured with the heavy Buffer and the extra weight in the BCG it would help but no avail. When I cycle the weapon using the charging handle the extractor picks up a round every time. I feel like the cycle rate is REALLY fast and the Extractor isn’t getting good purchase on the 9mm casing. I tried removing the weight on the back of the BCG but I still had the same issues. My build is as follows:Īngstadt Arms 9mm BCG with weight in the backĤ.5 inch Ballistic Advantage barrel with Kaw Valley 4” linear comp. Do we have any experienced AR9 home builders? I put one together following what I thought would be a solid recipe but am having loads of extraction issues. I finally have some time around home where I can work on this.
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