Lower Parts

The TRIARC Systems TRACK 2.0 Rifle Barrel Kit features a 12.5" TRACK 2.0 Barrel that is optimized for the TRIARC Systems A5/Extended Receiver Extension, VLTOR A5 H1 Buffer and Sprinco Green Buffer Spring. Also included is a Mil-Spec End Plate and Castle...

The TRIARC Systems TRACK 2.0 Rifle Barrel Kit features a 13.9" TRACK 2.0 Barrel that is optimized for the TRIARC Systems A5/Extended Receiver Extension, VLTOR A5 H1 Buffer and Sprinco Green Buffer Spring. Also included is a Mil-Spec End Plate and Castle...

The new MKII version of the GGP-S Series brings a new level of customizability never before seen in GGP rifle receivers. The Billet Receivers are precisely machined from 7075-T6 Aluminum for a perfect fit. The lower receiver includes an ambidextrous bolt...

Lightweight Integrally Machined Magazine Well Flare Oversized Winter Trigger Guard The STT-15L has all the same great aesthetics as our standard STT-15 Receiver Combo but incorporates a significant weight reduction. We set out to design our...

LBE Unlimited, Ambi Selector Assembly w/Spring and Detent, Black Finish The LBE ambidextrous selector assembly comes with a selector spring, detent and Hex wrench. Made in the USA.

Q, Big Butt Pad Assembly, Fits Q Fix Stock, Black The Big Butt Pad adds extra padding and thickness to the side folding fix stock. This Product is compatible with the Side Chick.

Sig Sauer - Magpul SK-K Stock, Side Folding, Fits MCX/MPX,  1913 Interface, Black This assembly includes everything you need to add or replace your MPX or MCX stock with a folding buffer tube and the Magpul SL-K Stock  Features: Fits...

SOLGW Loyal 9 Stripped Lower Receiver - Black The Sons of Liberty Gun Works Loyal 9 Stripped Lower Receiver is built for shooters who demand uncompromising quality, precision machining, and true duty‑grade durability. Crafted from mil‑spec 7075‑T6...

LMT® .308 receiver extension tubeLMT offers its 308 receiver extension, or buffer tube, for sale to customers for their builds. This tube is approx. 3/4″ longer than a standard AR-15 style buffer tube. This allows for usage of standard length...

LMT DEFENSE - MRP/AR15 Buffer Tube Kit LMT kept our builders in mind with this essential kit for your next project. The LM556BTK is ready to install in your stripped lower. Kit ships with a dry film lubed, Mil-Spec 6 position tube, standard buffer...

Timney Triggers 683 Replacement Trigger Single-Stage Straight Trigger with 4.50 lbs Draw Weight & Black Finish for Sig MPX Timney is the market leader for Sig replacement rifle triggers. This single-stage trigger is factory tuned for 4.5 lb...

Timney Triggers DH3 Daniel Horner Signature Single-Stage Straight Trigger with 1-3 lbs Draw Weight & Anodized Finish for AR-15 for Sig MPX for Sig MCX Daniel Horner and Timney’s engineers set out to create not only the ultimate AR-style...