Dirty Bird Magpul MOE Fixed 2-Stage Lower Build Kit

The Magpul MOE Fixed 2-Stage Lower Build Kit includes everything you need to finish your lower receiver, including the brand-new Dirty Bird 2-Stage Trigger Group.

Magpul MOE Fixed Stock

The MOE Fixed Carbine Stock has a slim profile, improved cheek weld, and multiple sling attachment options, and is compatible with ASAP® Plates and PRS® Extended Rubber Butt-Pad. Installation is non-armorer and does not require the castle nut or lock plate to be removed.

• Fixed length for standard mil-spec sized M4 Carbine receiver extension tubes (not included) from manufacturers such as Colt, LMT, Ruger, S&W, SIG, and others (please see the note below)
• ~12.2” Length of Pull
• Integrated 1.25” sling loops
• Compatible with ASAP Plate & PRS Extended Rubber Butt-Pad
• Durable polymer construction
• Available left/right side push-button QD Sling Mount Kits (not included)

Magpul MOE+ Rubber Overmold Grip

• Replacement for AR-15/M4 pistol-grip
• One-piece reinforced polymer construction with wrap-around rubber overmolding
• Beavertail backstrap for enhanced ergonomics
• Hard-polymer bottom edge to reduce equipment snags or grip damage
• Includes a basic grip cap, but accepts optional Storage Cores for customized gear stowage

Dirty Bird 2-Stage Trigger Group

This trigger assembly takes advantage of a two stage fire control design that has been trusted in both competition and combat roles for decades. Springs are tuned to provide a smooth first stage pull of about 1.5lbs and a crisp second stage break at 3lb for a total pull weight of 4.5lbs (actual total pull weight may vary ± .5lb). The 4.5lb total weight gives the operator a greater level of safety and control in high stress environments but with a second stage pull weight of only 3lbs, the shooter can also squeeze off long range precision shots with ease.

Dirty Bird AR-15 True Mil-Spec Carbine Receiver Extension / Buffer Kit

• 100% American Made Kit
• 7075-T6 Aluminum 6-Position Mil-Spec Receiver Extension (7075-T6 Aluminum is nearly twice as strong as 6061)
• 3oz Carbine Recoil Buffer w/ Steel Counter Weights
• Hardened Castle Nut w/ Staking Cuts
• Mil-Spec End Plate

Dirty Bird AR-15 Lower Parts Kit Minus FCG & Pistol Grip

• 100% American Made Kit
• Includes extra takedown / pivot pin detent and detent spring
• Includes enhanced polymer trigger guard